Although the potential of indigenous knowledge in sustainable natural resource management has been recognized, methods of gathering and utilizing it effectively are still being developed and tested. This paper focuses on various methods used in gathering knowledge on the use and management of tree fodder resources among the Maasai community of Kenya. The methods used were (1) a household survey to collect socio-economic data and identify key topics and informants for the subsequent knowledge elicitation phase; (2) semi-structured (...) interviews using key informants to gather in-depth information; (3) tree inventory to collect quantitative data on the ecological status of trees and shrubs on rangelands; and (4) group consensus method to countercheck information elicited from key informants. Study results obtained show that the use of multiple methods in an appropriate sequence is an effective way of building upon the information elicited from each stage. It also facilitates the collection of different types of data and knowledge allowing a measure of triangulation, which can be used to confirm the validity and consistency of indigenous knowledge. Multiple methods also allow the collection of more knowledge than can be obtained if only one method is used. Therefore, it is recommended that future studies on indigenous knowledge systems use multiple methods that combine both individual and group interviews in order to obtain more complete and accurate information. (shrink)

This paper reports on action research that evaluated local perceptions and knowledge of indigenous tree planting and management in the Romwe catchment, Chivi District, southern Zimbabwe. The species tested were the overexploited Afzelia quanzensis, important for timber and carvings of sculptures and utensils; Sclerocarya birrea, the marula tree used for wood, bark, and fruit; and Brachystegia glaucescens, the dominant miombo tree species, used for firewood, fiber, and fodder. Participants volunteered to plant and manage the test seeds, (...) while a research team monitored their activities and results for 26 months. For Afzelia quanzensis, the germination rate was 81%, and 69% of the seedlings were still alive after one year. In the case of Sclerocarya birrea, the germination rate was 69%, and the one-year survival rate was 50%. For Brachystegia glaucescens, the germination rate was only 30%, and the survival rate was 31%. The main reasons for planting were to provide shade, to serve as a windbreak, and to conserve and gain individual control over dwindling natural resources, particularly Afzelia quanzensis. Women were generally more active and innovative than men. For instance, they searched for their own seeds or seedlings in the bush when there weren’t sufficient plants. Some participants tried out various indigenous methods of pest and disease control, water conservation, and moisture retention. Group feedback sessions and informal interactions provided the opportunity to share experiences. The participants learned that indigenous trees can be purposefully planted and were not simply a gift from God. Despite the droughts and political instability of recent years, a growing number of people became involved in tree planting during 2002–2003. As a result, there is now greater awareness among the local population of dwindling resources and their future potential. (shrink)

This study explored local controls relating to trees and spacesof the local environment in Nyamaropa Communal Lands in theNyanga District of eastern Zimbabwe. Controls were consideredin a broad and inclusive framework encompassing codified rules,taboos, and, regulatory norms and emotions. Special emphasis waslaid on people‘s emotional and ethical investment in the abovecomponents of the environment – trees and spaces. The studyemployed intensive informal and group interviews. Results showthat there is tremendous emotional and ethical investment intrees and spaces of the environment in (...) Nyamaropa. Emotions comein a variety of forms: fear, shunning, love, reverence, andconfidence and security enhancement. The emotional and ethicalnorms are designed to govern behavior and the context of resourceutilization. These norms have implications on the organization ofspaces of the local environment and regimes of resource utilizationoccurring in them. Location of resources in spaces of the environmenthas implications on the management of resources within them. Thedomains of human habitation – home bases and home fields – werefound to be the most emotionally laden spaces with trees in thembeing actively planted, nurtured, conserved, eliminated, or destroyedon the basis of certain emotions and norms. The findings of the studyhave implications within the framework of decentralization and ofdemocratization of natural resource management. (shrink)

Cultural taboos and their sanctionshave helped to check abuse of the environmentat least among the local people. The disregardfor these traditional checks and balancesespecially among Christians has adverselyaffected their enforcement at this time. Theenvironment and culture preservation inAwka-South were investigated. The faithfulobservance of the traditional laws in the studyarea was attributed to the fact that Awka-Southarea had remained occupied by the same peoplefor centuries. The study showed that thepreserved forests and their shrines in Nibotown have largely remained intact. In Nisetown, (...) however, with nine shrines still inexistence, the rules have relaxed a little,mainly because they embraced modernization. Inthis town, the fringes of the forests may beused for farming but no felling of trees wouldbe allowed. The ``god'' of the shrine in Obunaguvillage was much revered until the advent ofChristianity. This religion has had an erodingeffect on the taboos, which were put in placeto protect their forests and streams. Theabandonment of traditional cultural practicesis doing harm that goes beyond the abrogationof traditional cultural practices to seriousthreat to natural environmental structures. Thecultures of the different tribes in Nigerianeed to be revisited for evaluation and studiesto enable their integration into modernpractices that will make the environment moresustainable. This will be more productive thanthe unilateral introduction of programs,execution, and maintenance methods that arecompletely new, or in many cases run contraryto the cultural practices of the local peopleand tribes of Nigeria. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Philosophy and Literature 27.2 (2003) 255-268 [Access article in PDF] The Tree of Knowledge and Darwinian Literary Study Jonathan Gottscha I THE BRANCHES OF KNOWLEDGE are not strewn randomly on the ground; they are part of a coherent, interconnected tree. Physics is the most fundamental of all the sciences, so it is the trunk of the tree. The branch of chemistry emerges from physics, because the (...) laws of chemistry depend on the laws of physics: chemical reactions occur the way they do because of the physical properties of atoms. Biology's branch splits off from chemistry's: the molecules that comprise living things are bound by the rules of chemistry. Scientists, while grasping this fundamental interconnection of the broad boughs of the natural sciences, 1 have rarely craned their necks sufficiently to glimpse the upper reaches of the tree of knowledge: the green canopy of human culture that is the traditional jurisdiction of the social sciences and humanities. In fact, scholars from all disciplines have mostly proceeded as though the greenery above was the outgrowth of a neighboring tree from a fundamentally different species.Since the 1960s, however, a maverick band of Darwinian neck-craners have been demonstrating that the stuff of human culture, studied in the humanities and social sciences, is a contiguous part of the tree of knowledge: human culture and behavior grow out of human biology. 2 These scholars and scientists continue to define themselves by different names depending on subtleties in their particular approaches: Darwinian psychology, sociobiology, Darwinian anthropology, biosociology, human behavioral ecology, human ethology, and evolutionary psychology. 3 However, sacrificing some precision on the alter of clarity, I will refer to all of the above approaches with the umbrella term of human [End Page 255] behavioral biology, understood in its most expansive sense as the study of how millions of years of evolution shaped the human mind, and thus human behavior, and thus human culture. No matter how human behavioral biologists define their work, they all share the conviction that human behavior, psychology, and culture cannot be fully understood separate from human bio-evolutionary history.Darwinian excavation of the foundations of human nature has inspired a revolutionary movement in the social sciences that proceeds to this day. Like most revolutions, this one has seen its share of rolling heads and intellectual bloodshed. Starting with the "sociobiology debates" of the late 1970s through mid-80s and continuing through the "science wars" of the early-mid 1990s allegations and recriminations of the most serious sort have been almost casually poured into the air: racism, sexism, Social Darwinism, biological determinism, disciplinary colonialism, disciplinary xenophobia, and "biophobia." 4 However, despite entrenched, sometimes zealous opposition, evolutionary thinking has firmly established itself in the social sciences. Thumbing through leading social science journals, it is no longer a shock to encounter articles exploring traditional topics with shiny new Darwinian tools. This stands in stark contrast to the situation in the decades immediately following World War II, where applying biology to human behavior and culture was virtually taboo. In fact, the UNESCO statement of 1952 explicitly tabooed human behavioral biology as scientifically and politically incorrect. Moreover, this phenomenon is in marked contrast to the mainstream social science of the late 1970s and early 1980s, which was in the midst of a wicked backlash against the resurgence of biological inquiry into behavior represented in sociobiology.Currently, while human behavioral biology retains many social scientist critics, and while certain social science fields remain largely hostile or indifferent, invoking biology to explain social behavior is moving toward the mainstream. Almost thirty years after E. O. Wilson made, in Sociobiology (1975), his first call for a merger of disciplines under a new biological synthesis, biology-savvy social scientists and social-science-savvy biologists have provided startling new insights into a host of topics traditionally examined in isolation from biology: gender differences, criteria for mate choice, resource acquisition and allocation, aggression, cooperation, xenophobia, ethnocentrism, sexual politics, religious sensibilities, social hierarchy, moral codes, etc. 5Though one must be careful not to overstate the progress, we are [End Page 256] witnessing... (shrink)

Since the late 1960's, a mix of government policies has prevented the loss of farmland in Sweden, “either to forest or asphalt”; these policies have also ensured the maintenance of soil fertility and groundwater resources. However, in Sweden as in several other European nations, a chronic and growing “grain glut” in recent years has undermined the economic logic of import protection and farm price supports—the principle means of promoting a sustainable agriculture. Mainstream economists, imbued with urban-biased and production-centered values, (...) have long criticized these costly mechanisms of public support as cost-ineffective and socially unjustified. They and many prominent politicians tend to minimize the non-production benefits of maintaining an open “working landscape” and rural communities dependent upon agriculture. Historically, Sweden's major farm organizations and its agrarian political party have resisted this economistic view with considerable success. Therefore it was a shock to many observers when, in 1986, leaders of the Swedish Federation of Farmers itself proposed planting trees on crop land as one element of a solution to overproduction.This essay traces the evolution of Swedish farm debates and policies since World War II, leading to the present critical juncture. It explores the incipient alliance between farmers and conservationists to protect farmland (as well as family farms and farm communities) and assesses the prospects for maintaining land in production through diversification into biomass energy crops and high protein fodder crops (the former option takes on new significance in the wake of the Chernobil disaster and pressure for early de-commissioning of Sweden's nuclear power plants; the latter would reduce Swedish dependence on imported soybeans). Finally, there is speculation on the relevance of Sweden's experience for American farmland policy. (shrink)

We describe a categorial system (PPTS) based on partial proof trees(PPTs) as the building blocks of the system. The PPTs are obtained byunfolding the arguments of the type that would be associated with a lexicalitem in a simple categorial grammar. The PPTs are the basic types in thesystem and a derivation proceeds by combining PPTs together. We describe theconstruction of the finite set of basic PPTs and the operations forcombining them. PPTS can be viewed as a categorial system incorporating someof (...) the key insights of lexicalized tree adjoining grammar, namely the notionof an extended domain of locality and the consequent factoring of recursionfrom the domain of dependencies. PPTS therefore inherits the linguistic andcomputational properties of that system, and so can be viewed as a middleground between a categorial grammar and a phrase structure grammar. We alsodiscuss the relationship between PPTS, natural deduction, and linear logicproof-nets, and argue that natural deduction rather than a proof-net systemis more appropriate for the construction of the PPTs. We also discuss howthe use of PPTs allows us to localize the management of resources, therebyfreeing us from this management as the PPTs are combined. (shrink)

We describe a categorial system (PPTS) based on partial proof trees(PPTs) as the building blocks of the system. The PPTs are obtained byunfolding the arguments of the type that would be associated with a lexicalitem in a simple categorial grammar. The PPTs are the basic types in thesystem and a derivation proceeds by combining PPTs together. We describe theconstruction of the finite set of basic PPTs and the operations forcombining them. PPTS can be viewed as a categorial system incorporating someof (...) the key insights of lexicalized tree adjoining grammar, namely the notionof an extended domain of locality and the consequent factoring of recursionfrom the domain of dependencies. PPTS therefore inherits the linguistic andcomputational properties of that system, and so can be viewed as a ’middleground‘ between a categorial grammar and a phrase structure grammar. We alsodiscuss the relationship between PPTS, natural deduction, and linear logicproof-nets, and argue that natural deduction rather than a proof-net systemis more appropriate for the construction of the PPTs. We also discuss howthe use of PPTs allows us to ’localize‘ the management of resources, therebyfreeing us from this management as the PPTs are combined. (shrink)

Professional and popular publications have increasingly depicted native peoples of Amazonia as “natural” conservationists or as people with an innate “conservation ethic.” A few classic examples are cited repeatedly to advance this argument with the result that these cases tend to be generalized to all indigenous peoples. This paper explores the premise that many of these systems of resource conservation come from areas of Amazonia where human survival depends on careful management of the subsistence base and not from a culturally (...) imbedded “conservation ethic.” Where resource constraints do not pertain, as in the case of the Yuquí of lowland Bolivia, such patterns are unknown. Finally, the negative consequences of portraying all native peoples as natural conservationists is having some negative consequences in terms of current struggles to obtain indigenous land rights. (shrink)

THE WEST AFRICAN NOTION OF THE "PALAVER," AS DESCRIBED BY CONgolese theologian Bénézet Bujo, is an excellent resource for postconflict reconciliation. The palaver creates physical, social, and psychological space for open communication so that persons can be integrated into the life and expectations of their communities. Through the palaver African communities heal sickness, educate their members about moral standards, and reconcile enemies. Three palaver-based commitments intersect with goals of postconflict reconciliation: a commitment to open communication, especially truth-telling; a commitment to (...) memory or developing a shared sense of the past; and a commitment to reconciliation at the communal level. Given the violent conflict still roiling parts of Africa today, it is critical to make explicit those African traditions that can encourage postconflict reconciliation and promote a just peace. (shrink)

Avoiding whinges from various and potentially conflicting stakeholders is a major challenge for sustainable development and for the identification of sustainability scenarios or policies for biodiversity and ecosystem services. It turns out that independently complying with whinge thresholds and constraints of these stakeholders is not sufficient because dynamic ecological-economic interactions and uncertainties occur. Thus more demanding no whinge standards are needed. In this paper, we first argue that these new boundaries can be endogenously exhibited with the mathematical concepts of viability (...) kernel and viable controls. Second, it is shown how these no whinge kernels have components, such as harvesting of resources, that should remain within safe corridor while some other components, in particular biodiversity, have only lower conservation limits. Thus, using radar charts, we show how this no whinge kernels can take the shape of a tree that we name viability tree. These trees of viability capture the idea that the unbounded renewal potential of biodiversity combined with a bounded use of the different ecosystem services are crucial ingredients for the sustainability of socio-ecosystems and the design of no whinge policies reconciling the different stakeholders involved. (shrink)

Scholars have often criticized Hinduism for being an ecologically unfriendly religion, due to being too “other worldly” and “indifferent” toward the natural world. According to Hindus, they argue that the natural world is simply māyā—“ephemeral,” “illusory,” and “unreal.” The Bhāgavata Purāṇa, for example, features over 60 passages that reduce the material world to nothing more than a passing dream. ). Meanwhile, other scholars have tried to correct this image by pointing to passages in Indian sacred literature that highlight the divinity (...) of nature, as well as Hindu rituals that involve worshiping the earth, plants, animals, trees, water, sun, and sky. This paper will argue, however, that both the scholarly criticisms and responses are problematic for two reasons. First, these discussions often assume that a religious practitioner’s beliefs concerning the world and environment directly correspond to her attitude toward, and treatment of, the environment. Second, the scholarly criticisms and responses are based on a narrow interpretation and understanding of the concept of māyā. The word “māyā” has held a variety of meanings in Indian sacred literature. This paper focuses on conceptions of māyā found within the Bhāgavata Purāṇa and explores resources in the Bhāgavata that may be useful for developing a Vaiṣṇava ecotheology. (shrink)

With the continuous development of “Internet + Education”, online learning has become a hot topic of concern. Decision tree is an important technique for solving classification problems from a set of random and unordered data sets. Decision tree is not only an effective method to generate classifier from data set, but also an active research field in data mining technology. The decision tree mining algorithm can classify the data, grasp the teaching process of the teacher, and analyze (...) the overall performance of the students, so as to realize the dynamic management of the educational administration and help the educational administration personnel to make the right decision, with more reasonable allocation of resources. This paper evaluates students’ academic performance based on the learning behavior data of online learning, so as to intervene in students’ learning in advance, which is the key problem that needs to be solved at present. Taking students’ learning attitude, completion of homework, and attendance as factors, the paper uses decision tree technology to analyze the factors affecting students’ performance, and evaluates students’ performance. Firstly, this paper collects the high-dimensional behavioral characteristic data of students’ online learning and conducts correlation analysis after preprocessing the behavioral characteristic data. Then, the decision tree C4.5 algorithm is used to construct a performance evaluation model. Students’ performance is evaluated by the model, and the evaluation accuracy is about 88% compared with actual performance. Finally, through the model analysis, it is concluded that the video task point completion is the most influential in students’ achievement, followed by chapter test completion and chapter test average score, and the course interaction amount and homework average score are the least influential in students’ achievement, which has a practical reference value for effectively serving online learning and teachers’ teaching. (shrink)

While pointing out important features of cognitive science, Núñez et al. (2019) also argue prematurely for the end of cognitive science. I discuss problematic analytic features in the application of hierarchical cluster analysis to journal citation data. On the conceptual side, I argue that the research programs framework of Lakatos may not be so wisely applied to cognitive science. Further, the diversity of structure in cognitive science departments may represent a rational, strategic adaptation by an interdisciplinary department to cognitive and (...) other resource challenges rather than the sign of low progress on a discipline. (shrink)

Numerous studies have shed some light on the importance of associated factors of collaborative attitudes. However, most previous studies aimed to explore the influence of these factors in isolation. With the strategy of data-driven decision making, the current study applied two data mining methods to elucidate the most significant factors of students' attitudes toward collaboration and group students to draw a concise model, which is beneficial for educators to focus on key factors and make effective interventions at a lower cost. (...) Structural equation model trees and structural equation model forests were applied to the Program for International Student Assessment 2015 dataset. By establishing the most important predictors and the splitting rules, these methods constructed multigroup common factor models of collaborative attitudes. The SEM trees showed that home educational resources, home possessions, mother's education, and gender were the most important predictors among the demographic variables, drawing a 5-group model. Among all the predictors, achievement motivation and sense of belonging at school were the most important, drawing a 6-group model. The SEM forest findings proved the relative importance of these variables. This paper discusses various interpretations of these results and their implications for educators to formulate corresponding interventions. Methodologically, this research provides a data mining approach to discover important information from large-scale educational data, which might be a complementary approach to enhance data-driven decision making in education. (shrink)

Social policies are used to regulate how members of a society interact and share resources. If we expand our sense of community to include the ecosystem of which we are a part, we begin to develop an ethical obligation to this broader community. This ethic recognizes that the environment has intrinsic value, and each of us, as members of society, are ethically bound to preserve its sustainability. In assessing the environmental risks of new agricultural methods and technologies, society should (...) not freely trade economic gains for ecological damage, but rather seek practices that are compatible with ecosystem health. This approach is used to evaluate the environmental risks associated with genetically engineered insect-resistant trees. The use of insect-resistant trees is a biologically based pest control strategy that has several advantages over pesticide use. However, the use of genetically engineered trees presents particular ecological concerns because the trees are long lived and often are not highly domesticated. The main environmental concerns reviewed include: (1) adaptation of pests to the trees, leading to a non-sustainable agricultural practice, (2) transgenic trees producing environmental toxins, (3) insect resistance enhancing the invasiveness of the tree, causing it to become weedy or invade wild habitats, and (4) transfer of the transgene to wild or feral relatives of the tree, possibly increasing the invasiveness of weeds or wild plants. Some methods are available to offset these risks; however, the environmental risks associated with this technology have been poorly researched and need to be more clearly identified so that when we evaluate the risks, it is based on the best information obtainable. To fulfil an ethical obligation to the environment, public policies and government regulations are needed to preserve the sustainability of both the environment and the future of our production systems. A better understanding of both the ecological issues and of genetic engineering in general are needed on the part of citizens and policy makers alike to ensure that sound environmental decisions are made. Otherwise, the environmental benefits of this technology, mainly decreasing the use of more toxic pesticides in tree crops and forests, will either be lost or traded for other environmental hazards. (shrink)

A paediatric clinical trial conducted in a developing country is likely to encounter conditions or illnesses in participants unrelated to the study. Since local healthcare resources may be inadequate to meet these needs, research clinicians may face the dilemma of deciding when to provide ancillary care and to what extent. The authors propose a model for identifying ancillary care obligations that draws on assessments of urgency, the capacity of the local healthcare infrastructure and the capacity of the research infrastructure. (...) The model lends itself to a decision tree that can be adapted to the local context and resources so as to provide procedural guidance. This approach can help in planning and establishing organisational policies that govern the provision of ancillary care. (shrink)

Reframing reveals possibilities. This article highlights how conceptual shifts regarding ‘sustainability’ occurring inside China’s municipalities and major corporations are opening the way for new collaborations with technology companies and technology artists. These shifts – from predetermined accounting to systems thinking – reveal new opportunities to intervene in the biophysical and economic challenges facing China today. In companies, this shift implies placing financially relevant environmental, social and governance (ESG) factors at the core of business strategy. In municipalities, this shift necessitates designing (...) and implementing systems that track ecosystem services rather than simply stocks of natural resources and recognizing interdependencies between these services and economic development. This article suggests that this sustainability reframing can draw heavily on systems thinking from environmental science, technology companies’ drive to develop products that meet these emerging demands, corporations’ need to compete in an uncertain developing market and the reframing skills of artists, particularly digital artists. This article concludes with opportunities for digital artists to intervene and collaborate with sustainability practitioners to open new directions for cities and companies in China. (shrink)

The field of environmental economics, while offering powerful tools for the diagnosis of environmental problems and the design of policy solutions to them, is unable to effectively incorporate normative concepts like justice or rights into its method of analysis, and so needs to be supplemented by a consideration of such concepts. I examine the two main schools of thought in environmental economics ? the New Resource Economics and Free Market Environmentalism ? in order to illustrate the shortcomings of their methods (...) of analysis, taken on their own, and to demonstrate how a consideration of concepts like rights or justice might usefully supplement them. (shrink)

A new approach to landscape ecology involves the application of the eco-field hypothesis and the General Theory of Resources. In this study, we describe the putative eco-field of bark beetles as a spatial configuration with a specific meaning-carrier for every organism-resource interaction. Bark beetles are insects with key roles in matter and energy cycles in coniferous forests, which cause significant changes to forestry landscapes when outbreaks occur. Bark beetles are guided towards host trees by the recognition of semiotic signals (...) using a specific eco-field. These signals mainly comprise a group of scents, which are called the odourtope. Their interactions with other organisms occur by sharing relevant information from the eco-field networks in the forest ecosystem. The eco-field networks modulate the expansion of the realized semiotic niche of the bark beetle towards the potential semiotic niche. Moreover, the niche construction process can be initiated by interchanging signals among species living in the same place, where these signals allow the exploitation of the required resources. If different organisms are interdependent on signals in eco-field networks, then this process may result in the establishment of mutualistic relationships. This is an example of how evolutionary processes are initiated by the recognition of signals in a network of eco-fields. (shrink)

This paper firstly designs a five-dimensional model of learners’ characteristics and a three-dimensional model of English reading resources’ characteristics in a fragmented learning environment through literature research. At the same time, to make the learning resources meet the characteristics of fragmented learning time and space, the English Level 4 reading resources are reasonably designed and segmented to adapt to the needs of learners’ mobile fragmented learning. Then, combined with machine learning algorithms, an adaptive recommendation model of learning (...) resources in English fragmented reading is constructed. The algorithm-based adaptive recommendation algorithm for English fragmented reading resources is designed. Based on the generated decision trees, the expression rules are parsed to achieve adaptive pushing of resources. The results of this study show that adaptive recommendation of learning resources in English fragmented reading can help teachers to develop future resource recommendation strategies through effective data collection to adaptively push resources that are close to learners’ individual needs. The use of mobile by English learners to learn to read in a fragmented learning context enables targeted training in weak areas of English reading, thus enhancing different aspects of learners’ reading skills. (shrink)

The greatest diversity of butterflies and their host plants occurs in tropical regions. Some groups of butterflies in the tropics exhibit monophagous feeding in the larval stage, exploiting only one family of plants; others are polyphagous, feeding on plants in two or more distinct families. The two major types of tropical habitats for butterflies, namely primary and secondary forests, offer very different evolutionary opportunities for the exploitation of plants as larval food. Butterflies are faced with the major logistical problem, as (...) are many other herbivorous insects, of depositing eggs on the correct plant for successful larval feeding. This paper, using the concepts of phenotype set and spatial patchiness of resources, attemps to make some predictions as to the optimal phenotypic systems for monophagous and polyphagous feeding in tropical butterflies, as related to the spatial patchiness of larval host plants in primary and secondary forests. In addition to the secondary compound chemistry of larval host plants as playing a role in the evolution of monophagy and polyphagy, the assumption is made that the spatial patchiness of host plants within and among different families also acts as a major factor in determining optimal ranges of phenotypes for different patterns of larval feeding. Owing to the high spatial patchiness of primary forest species of canopy trees and vines, it is predicted that butterflies exploiting these will be mostly polyphagous, whereas secondary forests having stable formations of fewer plant species and larger patches of these plants, will have mostly monophagous species. Forest understories may have both monophagous and polyphagous species, depending upon the layer of forest and the general type of understory (i.e. palmaceous or dicotyledonous). Field data on some groups of butterflies from tropical America support these predictions. Polyphagous butterflies are predicted to possess a genetic system of mixed morphs with a population being polymorphic as a whole; monophagous butterflies are predicted to have individuals all more or less similar genetically, and with a high amount of genic variation within individuals. Other forms of monophagy may evolve in species that are essentially monomorphic but with various mechanisms (physiological, developmental, behavioral) of phenotypic flexibility at the individual level. Although the environment is essentially coarse-grained for larvae since most are sedentary and polymorphism is an optimal adaptive strategy, the oviposition strategy of the adult must also be considered and some situations (i.e. forest canopy) have resources (host plants) distributed in a fine-grained fashion. Other forms of limited polyphagy may result from monomorphic genetic systems in which there is considerable phenotypic flexibility. (shrink)

Illness narratives convey a person’s feelings, thoughts, beliefs, and descriptions of suffering and healing as a result of physical or mental breakdown. Recognized genres include fiction, nonfiction, poetry, plays, and films. Like poets and playwrights, musicians also use their life experiences as fodder for their art. However, illness narratives as expressed through popular music are an understudied and underutilized source of insights into the experience of suffering, healing, and coping with illness, disease, and death. Greater attention to the value (...) of music within medical education is needed to improve students’ perspective-taking and communication. Like reading a good book, songs that resonate with listeners speak to shared experiences or invite them into a universe of possibilities that they had not yet imagined. In this article, we show how uncovering these themes in popular music might be integrated into medical education, thus creating a space for reflection on the nature and meaning of illness and the fragility of the human condition. We describe three kinds of illness narratives that may be found in popular music (autobiographical, biographical, and metaphorical) and show how developing skills of close listening through exposure to these narrative forms can improve patient-physician communication and expand students’ moral imaginations. (shrink)

Words like well, oh, and you know have long been observed and studied in spontaneous speech. With the proliferation of on-line dialogues, such as instant messaging between friends or back-and-forth postings at websites, there are increasing opportunities to observe them in spontaneous writing. In Experiment 1, the interpretation of discourse markers in on-line debates was compared to proposed functions of those markers identified in other settings. In Experiment 2, the use of discourse markers in spontaneous speech was compared to their (...) uses in spontaneous writing. Results support the conclusion that although they vary in frequency in spoken versus written domains, discourse markers are used similarly across domains, but with particular communicative functions that make them non-interchangeable. (shrink)

The discourse marker use of the word like is considered by many to be superfluously sprinkled into talk, a bad habit best avoided. But a comparison of the use of like in successive tellings of stories demonstrates that like can be anticipated in advance and planned into stories. In this way, like is similar to other words and phrases tellers recycle during story telling. The anticipation of like contrasted with the uses of other discourse markers such as oh, you know, (...) and well, which almost never re-occurred in similar locations across tellings. Um and uh did sometimes re-occur; these uses are contrasted with like. Although discourse markers are generally used on the fly to handle various issues that come up in coordinating talk as it unfolds, like can be used as an integral part of the story -a marked contrast to the prevalent idea that likes are speech tics. (shrink)

We explored the differential impact of auditory information and written contextual information on the recognition of verbal irony in spontaneous speech. Based on relevance theory, we predicted that speakers would provide acoustic disambiguation cues when speaking in situations that lack other sources of information, such as a visual channel. We further predicted that listeners would use this information, in addition to context, when interpreting the utterances. People were presented with spontaneously produced ironic and nonironic utterances from radio talk shows in (...) written or auditory form, with or without written contextual information. When the utterances were read without written contextual information, all utterances were rated as equally ironic. But when they were heard as opposed to read, or when they were presented in irony-biasing contexts, originally ironic utterances were rated as more sarcastic than originally nonironic utterances. This evidence suggests both acoustic and contextual information are used when inferring ironic intent in spontaneous speech, and validates previous manipulations of intonation in studies of irony understanding. (shrink)

To generate empathy in the care of vulnerable older persons requires care providers to reflect critically on their care practices. Ethics education and training must provide them with tools to accomplish such critical reflection. It must also create a pedagogical context in which good care can be taught and cultivated. The care-ethics lab ‘sTimul’ originated in 2008 in Flanders with the stimulation of ethical reflection in care providers and care providers in training as its main goal. Also in 2008, sTimul (...) commenced the organization of empathy sessions as an attempt to achieve this goal by simulation. The empathy session is a practical and fairly straightforward way of working to provoke care providers and care providers in training to engage in ethical reflection. Characteristic of the empathy session in the care-ethics lab is the emphasis on experience as a basis for ethical reflection. (shrink)

Observing others in conversation is a common format for comprehending language, yet little work has been done to understand dialog comprehension. We tested whether overhearers use addressee backchannels as predictive cues for how to integrate information across speaker turns during comprehension of spontaneously produced collaborative narration. In Experiment 1, words that followed specific backchannels were recognized more slowly than words that followed either generic backchannels or pauses. In Experiment 2, we found that when the turn after the backchannel was a (...) continuation of the narrative, specific backchannels prompted the fastest verification of prior information. When the turn after was an elaboration, they prompted the slowest, indicating that overhearers took specific backchannels as cues to integrate preceding talk with subsequent talk. These findings demonstrate that overhearers capitalize on the predictive relationship between backchannels and the development of speakers’ talk, coordinating information across conversational roles. (shrink)

The COVID-19 pandemic has presented a global threat to physical and mental health worldwide. Research has highlighted adverse impacts of COVID-19 on wellbeing but has yet to offer insights as to how wellbeing may be protected. Inspired by developments in wellbeing science and guided by our own theoretical framework, we examined the role of various potentially protective factors in a sample of 138 participants from the United Kingdom. Protective factors included physical activity, tragic optimism, gratitude, social support, and nature connectedness. (...) Initial analysis involved the application of one-sample t-tests, which confirmed that wellbeing in the current sample was significantly lower compared to previous samples. Protective factors were observed to account for up to 50% of variance in wellbeing in a hierarchical linear regression that controlled for a range of sociostructural factors including age, gender, and subjective social status, which impact on wellbeing but lie beyond individual control. Gratitude and tragic optimism emerged as significant contributors to the model. Our results identify key psychological attributes that may be harnessed through various positive psychology strategies to mitigate the adverse impacts of hardship and suffering, consistent with an existential positive psychology of suffering. (shrink)

Papers presented at the Kierkegaard: Resources and Results Conference, held at McGill University, June 6-8, 1980.

This article discusses ways to operationalise the concept of culturally appropriate computer-mediated communication, utilising information systems (IS) development methodologies and adopting a postmodern and postcolonial perspective. By way of illustration, it describes progress on the participative development of the Ieramugadu Cultural Information System. This project is designed to develop and evaluate innovative procedures for elicitation, analysis, storage and communication of indigenous cultural heritage information. It is investigating culturally appropriate IS design techniques, multimedia approaches and ways to ensure protection of secret/sacred (...) information. Ethical issues are foregrounded. (shrink)

There has been little previous scholarship regarding the aims, options and impact of ethics education on residential care‐givers. This manuscript details findings from a pragmatic cluster trial evaluating the impact of three different approaches to ethics education. The focus of the article is on one of the interventions, an immersive simulation experience. The simulation experience required residential care‐givers to assume the profile of elderly care‐recipients for a 24‐hr period. The care‐givers were student nurses. The project was reviewed favourably by a (...) university ethics committee, and participants provided informed consent. Data from six postsimulation experience focus groups were analysed thematically and three themes were identified: the experience of vulnerability, dignity in care and the organisation of care. Findings suggest that the immersive simulation experience had a powerful immediate impact as participants described epiphanous insights relating to their care experiences. It is suggested that reflecting on and recording epiphanous events has the potential to sustain ethical care practices. Further research is required to evaluate the impact of different ethics education interventions in different cultural contexts. Exploration is also required regarding the meaning and significance of care epiphanies, those “most delicate and evanescent of moments,” for the sustainability of ethical care. (shrink)

Bilingualism has been identified as a potential cognitive factor linked to delayed onset of dementia as well as boosting executive functions in healthy individuals. However, more recently, this claim has been called into question following several failed replications. It remains unclear whether these contradictory findings reflect how bilingualism is defined between studies, or methodological limitations when measuring the bilingual effect. One key issue is that despite the claims that bilingualism yields general protection to cognitive processes, studies reporting putative bilingual differences (...) are often focused on domain specific experimental paradigms. This study chose a broader approach, by considering the consequences of bilingualism on a wide range of cognitive functions within individuals. We utilised 19 measures of different cognitive functions commonly associated with bilingual effects, to form a “cognitive profile” for 215 non-clinical participants. We recruited Welsh speakers, who as a group of bilinguals were highly homogeneous, as means of isolating the bilingualism criterion. We sought to determine if such analyses would independently classify bilingual/monolingual participant groups based on emergent patterns driven by collected cognitive profiles, such that population differences would emerge. Multiple predictive models were trained to independently recognise the cognitive profiles of bilinguals, older adults and higher education attainment. Despite managing to successfully classify cognitive profiles based on age and education, the model failed to differentiate between bilingual and monolingual cognitive ability at a rate greater than that of chance. Repeated modelling using alternative definitions of bilingualism, and just the older adults, yielded similar results. In all cases then, using our “bottom–up” analytical approach, there was no evidence that bilingualism as a variable indicated differential cognitive performance – as a consequence, we conclude that bilinguals are not cognitively different from their monolingual counterparts, even in older demographics. We suggest that studies that have reported a bilingual advantage could well have confounded other key variables that may be driving reported advantages. We recommend that future research refine the machine learning methods used in this study to further investigate the complex relationship between bilingualism and cognition. (shrink)

This article outlines the ecological and ethnobotanical characteristics of the monkey-puzzle tree (Araucariaaraucana), a long-lived conifer of great importance to the indigenous population living in and around its range in the southern Andes. The article also considers the pre-Columbian and historical use of indigenous fire technology. Conclusive evidence of indigenous burning is unavailable. However, our knowledge of native fire ecology elsewhere and our understanding of monkey-puzzle's ecological response to fire suggest that indigenous people probably burned in the past to (...) facilitate the growth of monkey-puzzle trees relative to other species. The obstacles to recovering and redeploying a defunct fire-based production strategy include the vulnerable condition of monkey-puzzle stands after decades of intense logging and burning (by non-indigenous settlers), inadequate access to land and resources by the region's indigenous inhabitants, livestock pressure, depletion of game animals that were once hunted with fire, and reluctance by indigenous people to embrace old production strategies that have been supplanted by new ones based on domesticated animals and crop cultivation. Prescribed burns in selected areas offer an effective way to assess the feasibility of indigenous burning as an alternative to more conventional development initiatives. (shrink)

The tropical lowlands of southern Mexico and Central America are composed of a complex mosaic of landscapes that presented a variety of possibilities and challenges to the subsistence practices of the ancient Maya. The Yalahau Regional Human Ecology Project has been investigating ancient Maya agricultural practices and use of resources in a unique fresh-water wetland zone located in the northeast corner of the Yucatán Peninsula. While containing only a sparse population today, the Yalahau region once supported numerous Maya communities (...) and civic-ceremonial centers, particularly during the Late Preclassic and Early Classic periods, between approximately 100 B.C. and A.D. 450. Our investigations have developed evidence that the ancient Maya manipulated and cultivated the wetland landscape of the region, used soil or algae from the wetlands to enrich upland garden plots, and cultivated trees within their communities. We suggest that the study of ancient Maya agricultural practices can contribute to sustainable development of the area today and in the future. (shrink)

The Value of Trees project, funded bythe International Development Research Council ofCanada (IDRC), supported the joint efforts of theUniversity of Alberta and the University of Zimbabweto investigate the economic costs and benefitsassociated with trees and forests in the small holderfarming sector in Zimbabwe. The Value of Trees project provided funding for graduate students andfaculty from the two participating universities tocarry out studies in the disciplines of forestry,agricultural economics, and sociology in order toprovide policy recommendations regarding the role ofwoodlands in sustainable (...) small holder farming in acontext where agricultural production appears to putincreasing stress on woodlands. The numerous projectsincluded such topics as the following: the use offuelwood under conditions of scarcity, tree tenure andlocal institutions in woodland use and sustainability,gender and wealth as related to tree planting andconservation, time preferences in natural resourceconsumption, ownership and economic impact ofeucalyptus woodlots, cultural and economic valuesassociated with woodlands, and uses and conflictsrelating to woodlands across different land categoriessuch as resettlement land and state forests. Manyother studies were not funded by, but were associatedwith Value of Trees. The findings fall withintwo broad categories. The first set includes thosedirectly related to generating values for differentaspects of the woodlands, particularly from theperspectives of rural households. The main finding isthat despite being highly valued by local people forboth economic and social reasons, woodlands are rankedlower in importance by local farmers than agriculturalland. The second set of findings relates to thecomplexities of the social system of the woodlands.Local institutions, history, resource conflicts, andtenure issues emerge as key to understanding the waythat people interact with the woodlands. Finally,local people have valuable knowledge and strategies tooffer in the design of sustainable management. Thepolicy implications of these findings for Zimbabwe arethat economic incentives could be important in asustainable woodlands strategy, but that anysuccessful program must incorporate an understandingof the profoundly complex and at times contradictoryhuman dynamics of woodland use and values. (shrink)