Landscape Of Practice Research Articles

Second Generation Bio-Ethanol Production from Agroforestry Practices in Salt-affected Landscapes in India: A Review

Second Generation Bio-Ethanol Production from Agroforestry Practices in Salt-affected Landscapes in India: A Review

Planning eco-sensitive zones for promoting tree diversity and ecosystem services in urban academic landscapes: a case study from the North-western Indo-Gangetic plain

ABSTRACT Urban academic greenspaces provide a protective environment for the conservation of plants and animals and ecological health benefits to human beings. Several anthropogenic activities and landscape practices lead to patches of natural and built-up areas; therefore, a better understanding of campus tree diversity and ecosystem services among natural and built-up areas may help in biodiversity management. Considering this, we assessed how landscape heterogenicity (i.e. the proportion of natural and built-up/paved surface area) and planning principles influence tree density and diversity patterns in three zones (buffer zone: natural/remnant woodland; transition zone: mixed open grassland and woody plantation; core zone: paved/built-up, grassland, and scattered woody plantation) in the Indian Institute of Science Education and Research (IISER) Mohali campus (Punjab) India. We found a total of 1,993 trees belonging to sixty-eight species, mostly native flora. We found that landscape planning principles significantly influenced tree diversity patterns, with the highest tree diversity in the B3 buffer zone (H: 2.9, PIE: 0.9), which integrated elements of the original landscape and new plantations to optimise ecological value and the lowest diversity in the B2 buffer zone (i.e. H: 0.4; PIE: 0.2) with a monoculture plantation of exotic agroforestry species. We also observed that tree density was negatively influenced by impervious surface area (r = -0.68, p < 0.05) in the core zones and by the plantation of exotic species in the natural areas. The campus diversity supports birds of different feeding guilds (insectivore: 41%, omnivore: 25%, carnivore: 25%, frugivore/nectarivore: 13%, graminivore: 4%, and piscivore: 2%). Additionally, academic buildings planned with high canopy cover and density (45% and 95 ha−1) had reduced the wall temperatures of academic buildings from 12°C to 6°C compared to neighbouring buildings without tree cover. This highlighted the importance of maintaining tree diversity in urban academic institutions to promote urban sustainability.

Exploring peer-to-peer lending: key influences of firm uncertainty, loan features and venture quality

PurposeThe purpose of this study is to identify the determinants of success in peer-to-peer (P2P) lending campaigns, especially amid global financial disruptions like the COVID-19 pandemic. Addressing a notable gap in current research, we explore how factors such as firm uncertainty, loan characteristics (interest rates and maturity) and venture quality (human, social and intellectual capital) influence P2P lending effectiveness. Using multiple regression analysis on data from 523 projects on the October platform, our study aims to enhance the understanding and operational efficiency of P2P platforms, contributing to a more resilient financial ecosystem.Design/methodology/approachThis study employs a quantitative research design using multiple regression analysis to examine the impact of specific variables on the success of P2P lending campaigns. Data were collected from 523 concluded P2P lending projects on the October platform, spanning from 2015 to 2021. Variables of interest include the level of uncertainty of the firm, loan characteristics such as interest rate and maturity and the quality of the venture assessed through human, social and intellectual capital. This method allows for a robust analysis of the factors contributing to the success of P2P lending within a dynamic financial context.FindingsThe findings of this study reveal that the success of P2P lending campaigns is significantly influenced by the level of uncertainty of the firm, the interest rate of the loan and the quality of the venture. Specifically, higher uncertainty in firms correlates negatively with campaign success, while competitive interest rates positively impact funding outcomes. Furthermore, ventures that demonstrate robust human capital, particularly those with management teams that possess diverse skills and high qualifications, tend to attract more funding. These results underscore the critical role of strategic financial and human resource planning in enhancing the effectiveness of P2P lending platforms.Originality/valueThis study contributes uniquely to the literature by integrating multiple variables – firm uncertainty, loan characteristics and venture quality – into a comprehensive analysis of success factors in P2P lending. It addresses the scarcity of research examining the combined effects of these factors, particularly in the context of global financial disruptions like the COVID-19 pandemic. By focusing on a specific European platform during a dynamic period, this research provides new insights into how P2P lending can adapt to and thrive amid financial crises. The findings offer valuable guidance for both practitioners and policymakers aiming to optimize P2P lending practices in uncertain economic landscapes.

Subsidence and Uplift in Active and Closed Lignite Mines: Impacts of Energy Transition and Climate Change

This study examines the combined effects of decommissioning lignite mining operations and long-term climate trends on groundwater systems and land surface movements in the Konin region of Poland, which is characterised by extensive open-pit lignite extraction. The findings reveal subsidence rates ranging from −26 to 14 mm per year within mining zones, while land uplift of a few millimetres per year occurred in closed mining areas between 2015 and 2022. Groundwater levels in shallow Quaternary and deeper Paleogene–Neogene aquifers have declined significantly, with drops of up to 26 m observed near active mining, particularly between 2009 and 2019. A smaller groundwater decline of around a few metres was observed outside areas influenced by mining. Meteorological data show an average annual temperature of 8.9 °C from 1991 to 2023, with a clear warming trend of 0.0050 °C per year since 2009. Although precipitation patterns show a slight increase from 512 mm to 520 mm, a shift towards drier conditions has emerged since 2009, characterised by more frequent dry spells. These climatic trends, combined with mining activities, highlight the need for adaptive groundwater management strategies. Future research should focus on enhanced monitoring of groundwater recovery and sustainable practices in post-mining landscapes.

Traversing the boundaries in landscapes of practice: A mixed methods study of interprofessional education centered on inpatients in an acute hospital setting

Healthcare requires practitioners to successfully negotiate boundaries between communities of practice (CoP) in a clinical landscape of practice (LoP), with development of interprofessional identity important in promoting successful interprofessional collaboration. Interprofessional education (IPE) centered around acute hospital inpatients offers a potential pathway to encourage boundary negotiation and interprofessional identity development. This study aimed to explore interprofessional student teams and their interactions with patients in an acute hospital setting, while investigating if such interactions encouraged interprofessional collaboration and the development of an interprofessional identity. Pivoting around acute hospital inpatients, four interprofessional workshops occurred involving senior medicine, nursing and physiotherapy students. We utilized a concurrent mixed methods design, with qualitative predominating. Qualitative reflexive thematic analysis of post-workshop semi-structured focus groups was supported by quantitative investigation using a validated pre-test post-test international socialisation and valuing scale. Using the landscapes of practice theory lens, we noted that the central role of acute hospital inpatients in the IPE workshops enabled healthcare students to develop knowledgeability of the clinical LoP, in line with the three modes of identification of LoP, namely Engagement, Imagination and Alignment. Following the IPE workshops, where acute inpatients played the pivotal role, students demonstrated a statistically significant increase in interprofessional collaborative practice in terms of the overall interprofessional socialisation and valuing scale and its subscales of value, ability, and comfort in working with each other. Our findings indicate that IPE centered around acute hospital inpatients is a beneficial and effective way to successfully implement IPE in the undergraduate curriculum.

Language, belief, and cultural resilience: Rastafarian discourse in Britain

This paper explores the intricate relationship between language, belief, and cultural resilience within the Rastafarian movement in Britain. Drawing upon interdisciplinary perspectives from linguistics, religious studies, cultural anthropology, and sociology, the paper delves into the unique linguistic practices, spiritual beliefs, and cultural expressions of Rastafarians in Britain.The paper examines the evolution of Rastafarian discourse, highlighting its distinctiveness and resilience within the context of Jamaican Patois and British multiculturalism. It analyses the role of language in shaping Rastafarian identity, resistance, and community cohesion, considering how linguistic practices reflect and reinforce Rastafarian beliefs and cultural norms.Furthermore, the paper explores the religious beliefs and practices that underpin Rastafarianism, particularly the reverence for Emperor Haile Selassie I and its implications for Rastafarian identity in Britain. It investigates how Rastafarian beliefs intersect with broader social and political issues, including race, colonialism, and social justice, shaping the movement’s engagement with British society.Finally, the paper examines the concept of cultural resilience within the Rastafarian community, analysing how Rastafarians in Britain have preserved and adapted their cultural traditions in the face of challenges such as racism, discrimination, and cultural assimilation. Overall, this paper contributes to a deeper understanding of the Rastafarian movement in Britain and its significance in the context of language, belief, and cultural resilience. It underscores the enduring impact of Rastafarian discourse and practices in shaping diverse cultural landscapes and fostering social change./ Keywords: Rastafarian colonial discourse, global dynamics, racial politics, Britain, societal integration, policy measures, fragmentation, Afrocentric interpretations, colonial resistance, prophetic salvation, cultural revitalization, London, African exploitation, white working-class culture

Sustainable Transhumance Practices in European Landscapes. A Comparative Study

Sustainable Transhumance Practices in European Landscapes. A Comparative Study

Campina Experimental do Cerrado: uma pesquisa-ação na Unesp, Câmpus de Bauru

The aim of this article is to present the planning, design, and execution of the action research project titled "Campina Experimental do Cerrado." This project involves a garden featuring herbaceous and shrub species native to the São Paulo Cerrado and other flowering plants cultivated or naturalized in Brazil. The garden is located in the courtyard of the Central Laboratory of the Faculty of Architecture, Arts, Communication, and Design at São Paulo State University (FAAC-UNESP), Bauru Campus. The Campina involves both undergraduate and graduate students and faculty from the Architecture and Urbanism and Biological Sciences programs. The aim of the project is to gain greater knowledge about the landscaping potential of the tested species to introduce them into landscaping practices and provide support for the implementation of new gardens utilizing native flora, thereby increasing visibility, particularly of the Cerrado biome.

Long-term dynamics of grasslands and livestock in Norwegian cultural landscapes: implications for a sustainable transition of rural livelihoods

ContextAbandonment of cultural landscape practices has had a notable impact on grasslands and domestic livestock that depend on them. This affects the prerequisites for sustainable transitions of cultural landscapes, which combine traditional livelihoods and novel ones like tourism.ObjectivesThe aims of this study were to explore (1) the long-term temporal dynamics of grassland and livestock in a regional gradient from coastal to inland landscapes in Norway and (2) the temporal development of tourism types among regions.MethodsUsing three regions as case studies, with 62 municipalities, we analyzed (1) the temporal dynamics of grassland and livestock using agricultural census data from 1918 to 1999 and (2) two tourism types. Kruskal–Wallis and ANOVA were used to examine whether the relative changes in grassland areas and livestock units, respectively, differed significantly among regions. A PCA was conducted to explore relationships between grassland and livestock types. The proportions of tourist categories were compared.ResultsThe grassland area and thematic resolution of census data declined over time. Grassland areas correlated with domestic livestock units. Multivariate analysis explained 68% of the variation in grassland and livestock types among municipalities. There was a notable increase in the number of tourists, with summer tourism dominating where the cultural landscape was well conserved.ConclusionsOur study underscores the importance of integrating regional historical trajectories for the conservation and use of valuable cultural landscapes, thereby providing sustainable transitions that combine traditional livelihoods and new types as tourism. Additional in-depth studies are needed to understand the detailed drivers of these changes.

Contribution of Basic Science Education to the Professional Identity Development of Medical Learners: A Critical Scoping Review.

Professional identity development (PID) has become an important focus of medical education. To date, contributions of basic science education to physician PID have not been broadly explored. This review explores the literature surrounding the contribution of basic science education to the PID of medical learners and interprets findings critically in terms of the landscapes of practice (LoP) framework. In this critical scoping review, the authors searched 12 different databases and professional organization websites from January 1988 to October 2022 for references relating to how, if at all, the basic science component of medical education contributes to the PID of medical learners. The LoP learning theory was chosen as a framework for critically interpreting the identified articles. Of the 6,674 identified references, 257 met the inclusion criteria. After data extraction, content analysis of recorded key findings was used to ensure all findings were incorporated into the synthesis. Findings aligned with and were critically interpreted in relation to the 3 LoP modes of identification: engagement (engaging in the work of a physician), imagination (imagining oneself becoming a "good doctor"), and alignment (aligning with the practices and expectations of a medical community or specialty). Within each mode of identification, it was possible to see how basic science may support, or catalyze, PID and how basic science may serve as a barrier, or an inhibitor, to PID or contribute to the development of negative aspects of identity development. The LoP learning theory suggests that the effect of basic science on physicians' PID is most effective if educators view themselves as guides through interfaces between their scientific disciplines and medicine. Learners need opportunities to be engaged, to imagine how their current learning activities and developing skills will be useful as future physicians, and to feel alignment with medical specialties.

Adaptability and prospects for the use of introduced representatives of the genus Weigela in different climatic conditions

The use of highly decorative and beautifully flowering shrubs in urban green spaces, especially in sharply continental climatic conditions, is extremely important. In this regard, representatives of the genus Weigela are highly valued in the in different climatic conditions. The main indicators of eco-physiological adaptability of plants, such as intensity of transpiration and photosynthetic productivity, water deficiency and the total water content, quantity of the plastids, have been studied for the representatives of highly ornamental shrubs of the genus Weigela Thumb. The object of the research was the following representatives of the genus Weigela: W. praecox, W. coraeensis, W. floribunda, W. florida and W. florida ʺVariegataʺ, which were introduced into different climatic conditions in order to climate train and replenish the dendro-collections. Physiological research was conducted, during the vigorous vegetative period (May–June months). All the measurements were carried out within the 11:00–13:00 time period, in 9 repetitions (7–10 shoots were chosen for each sample). The nature of ecological adaptability of the studied species, along with the perspective of their application in the landscaping practices in different climatic zones was revealed. At the same time it was revealed that the studied species can be used not only as solitary plants (especially on the background of green lawns) but also in groups in long blooming gardens (with flowers with different colours and blooming phases) and in decorating rock gardens.

Patterns of tree radial growth along an urban[sbnd]rural gradient in Beijing, China

With the acceleration of global climate change and urbanization, the climate and environment in urban and rural areas exhibit significant differences that may impact tree growth. The specific mechanisms underlying the interaction between climate change and urbanization on tree growth remain unclear. In this study, we investigated the interaction using a tree ring network spanning a gradient from the urban centre to rural areas. Our findings indicate that urbanization enhances tree growth in urban areas, likely due to elevated temperatures and increased concentrations of carbon dioxide and nitrogen oxides. Conversely, rural tree growth appears to be predominantly influenced by climatic factors, particularly hydrothermal conditions which account for over 96 % of the variance. Additionally, we observed a gradual increase in the correlation between tree growth and climate factors as we move from the urban centre to rural areas. Overall, our results suggest that prolonged human disturbance and urbanization may reduce the sensitivity of trees to climate change while promoting their growth in urban settings. These findings offer valuable empirical data and insights for future studies on urban tree growth models and provide a foundation for urban landscaping practices.

Defining preferred turfgrass features for lawn choice for Floridian homeowners

Turfgrass lawns provide many environmental benefits, including temperature moderation, soil stabilization in urban centers, and surface water runoff reduction in the rapidly urbanizing societies. Recently, more sustainable management of urban vegetation have arisen to encourage Florida homeowners to shift from high-input (e.g., fertilizer, water) to low-input landscapes through initiatives such as the Florida Friendly Landscapes and Florida Water Star Programs. To support the water conservation programs in Florida, and better understand homeowners' lawn choices, the objective of this study is to identify and evaluate homeowners' preferred turfgrass features for lawn choices and understand the context of promoting sustainable landscaping practices in the state of Florida. Approximately 1000 Florida homeowners were surveyed online and ranked their most preferred turfgrass features out of a set of 12 alternatives. A rank-ordered logit model was utilized to evaluate Florida homeowners’ preferences for different turfgrass features and determine if they influence turfgrass selection for Florida homeowners. The results showed that the top features were drought tolerance, color, frequency of mowing, disease resistance, and pest tolerance. Identification and communication of water proficient, low fertilizer input turfgrass cultivars that are tolerant to environmental stresses (e.g., drought, traffic, shade) are needed in Florida. Policymakers should promote strategies to combat drought tolerant cultivars. Extension agents should educate homeowners on grass dormancy and drought tolerance (affecting color change) as well as promote disease resistance and pest tolerant species through the Florida Friendly Landscape and WaterStar Programs.

The Low Congruence between Plant and Animal Diversity in Field Ridges of Intensively Managed Paddy Landscapes, China.

Field ridges are commonly viewed as the stable semi-natural habitats for maintaining plant diversity in the agricultural landscape. The high plant diversity could further support higher animal diversity. But following the adoption of well-facilitated farmland construction measures in China, many field ridges have been disproportionately neglected or destroyed. Empirical studies delineating the relationships between plant and animal diversity in these field ridges in the paddy landscape remain scant, especially in China, which has the most rice production. A two-year field ridge evaluation was conducted in the Chengdu Plain area, covering 30 paddy landscapes. This investigation scrutinizes the shape attributes of field ridges, their plant diversity, and the associated animal α-diversity and community compositions, including spiders, carabids, birds, frogs, and rice planthoppers. In the results of Pearson's correlation analysis, a significant inconsistent correlation was observed between plant diversity and animal diversity. The analysis of community structure heterogeneity also revealed no correspondence for species composition between plant and animal communities (i.e., spiders, carabids, and birds), while the non-metric multidimensional scale analysis indicated a substantial difference in the species composition of spiders or plants even within the same field ridge between 2020 and 2021. We argue that the implementation of intensive management practices in paddy landscapes, such as machine ploughing and harvesting and herbicide spraying with drones, leads to a scarcity of stable animal and plant communities in field ridges. Therefore, besides retaining these field ridges in paddy landscapes, maintaining the long-term stable ridges by refraining from herbicide spraying or artificial weeding, as well as avoiding winter wheat cultivating in field ridges, will contribute to protecting biodiversity of field ridges as semi-natural habitats.

Urban virtual environment landscape design and system based on PSO-BP neural network

In the last few years, with the fast growing of neural network field such as those for virtual reception and enhanced nature, the practice and theory of conventional landscape are impacted and challenged by virtual landscape based on these sorts of neural network technologies. On the one hand, the virtual landscape changes the carrier of landscape design from material real world to the networked virtual world, which breaks the traditional way of generating landscape and the way of expression of results. On the other hand, the virtualized and networked morphological characteristics of the virtual landscape itself and its capacity that can offer users a sense of immertion, interplay and enjoyment of the experience provide a way of extending and deepening the realm of scenery. It is also a new type of landscape that conforms to the trend of the times created in the background of the fast evolution of scientific and technical development. Virtual landscape brings new construction thinking and practical means for the application of digital city, the construction of urban context, and the development and utilization of relics. It provides an important research source for thinking about the relationship between current humanities and science, material and virtual, history and contemporary. After the research and experiment on the urban environment landscape design of PSO-BP neural network, the experimental data showed that before using the neural network method to improve Yanta East Garden, 57% of the crowd were satisfied with the overall impression of Yanta East Garden, and 17% were dissatisfied. After the improvement, 67% were satisfied with the landscape of Yanta East Garden, only 5% were dissatisfied, and the landscape satisfaction increased by 10%. The survey group believed that the landscape color of Yanta East Garden was full of historical flavor, especially the small sculptures convey the unique Qin Opera culture. The above data show that the method based on neural network is very suitable for the improvement and development of urban landscape design.

«TECHNOLOGY OF LANDSCAPING EDUCATIONAL INSTITUTIONS» PROJECT AS A BASIS FOR ENVIRONMENTAL EDUCATION OF PHYSICS TEACHERS DURING THEIR FUNDAMENTAL TRAINING: ISRAELI EXPERIENCE

This article addresses the pressing issue of fundamental training for future physics teachers, emphasizing the need to bridge theory and practice, integrate natural sciences with environmental education, and develop students’ research and environmental competencies. The focus is on the importance of collaborative project activities between educators and future physics teachers as a cornerstone of comprehensive training. The author introduces the project “Technology of Landscaping Educational Institutions” as a key method for environmental education during the fundamental training of physics teachers at a pedagogical university. Key project tasks included: 1) identifying ecological foundations for creating green spaces in educational institutions; 2) describing functional zones within the institution for potential improvements; 3) substantiating the roles of green spaces in the educational yard; 4) developing landscaping technology for the institution’s courtyard; and 5) exploring international landscaping practices through the example of Ariel University in Israel. The project was carried out through partnership pedagogy, cross-cultural communication, and inter-university cooperation between V.G. Korolenko Poltava National Pedagogical University and Ariel University. During the project, students, who are future physics teachers from V.G. Korolenko Poltava National Pedagogical University, engaged with scientific sources and the website of Ariel University. They participated in virtual tours of Ariel University’s campus and attended online consultations to assist with project tasks. As a result, Ukrainian students developed and presented reports on the technology of environmentalization for educational institutions and proposed their own landscape design concepts for the Poltava National Pedagogical University’s grounds. The project “Technology of Landscaping Educational Institutions” is a paragon of partnership pedagogy, cross-cultural communication, and inter-university collaboration. Knowing the nature, students become harmoniously developed and comprehensively aware personalities, which is an important element of modern educational process.

Potential of Agroforestry Practices in Multifunctional Landscapes for Enhancing the Livelihoods of Local Dwellers in the North-Western Charlands of Bangladesh

Char is any accretion in a river course that extends or establishes new land. A well-planned integrated land-use system combining woody perennials (agroforestry) can ensure sustainable, environmentally friendly climate resilience land-use systems and livelihood options on charland. To date, no systemic investigation of charland land agroforestry has been undertaken. A comprehensive study of the potential of agroforestry systems in charland areas was conducted using qualitative and quantitative methodologies. Two methods were employed: structured questionnaire interviews and botanical surveys. Findings revealed that considerable variation exists in both charland and mainland areas in terms of socio-demographic characteristics. Both tree and agroforestry knowledge of mainland farmers is greater than that of charland farmers. Charland dwellers sell almost all their farm products, while most mainland farmers consume their products. Agroforestry-related communication between extension workers and farmers is limited in both ecosystems. However, farmer interaction with extension workers is far less common in charland areas. Mainland farmers are satisfied with their homestead production systems, whereas cha land farmers face huge problems with the free grazing of cattle and goats. Mainland farmers think quality planting materials and fencing systems are key issues. Leafy short-rotation vegetables and climbing vegetables are more common in charlands. Other common marketable vegetables are tomato, brinjal, carrot, cauliflower, and cabbage. All fruit trees common on charland are more frequently found in the mainland areas. In the case of timber, eucalyptus (Eucalyptus camaldulensis) is more common on charland, whereas mahogany (Swietenia macrophylla) frequency is higher in the mainland. Medicinal trees are uncommon in both ecosystems except for neem (Azadirachta indica). Through proper training and motivation of farmers, there is a vast scope to increase tree and vegetable diversity in charland farms.

Absence of Structure

In mainstream design practice, the disciplines of interior design and landscape architecture most commonly come together in the context of an architectural project. In a typical project team, the two professions will not readily intersect or overlap as the architecture is always in-between, and although they may consult with each other, the two disciplines may not necessarily collaborate. Collaboration is more than simply teamwork and the necessary consultation that takes place amongst members of a project team. True collaboration between disciplines occurs when practitioners consciously step beyond their professional boundaries and engage in a new process of design that is informed by their collaborators from other professional areas. Focusing on the experiences of the interior design and landscape architecture members of two teams in a recent design competition the paper investigates what can occur when interior and landscape practitioners work together as members of multi-disciplinary team to address a series of design briefs that are not necessarily architectural, but are deliberately open, experimental and address a multitude of scales.

Preaching Through the Choir. What Interprofessional Education Can Learn From Choir Singing.

Collaboration between healthcare professionals from different backgrounds is a true art to be mastered. During interprofessional education (IPE), learners from different professions learn with, from and about each other. Landscape of Practice (LoP) theory can offer insight into social learning in IPE, but its application is rather complex. We argue that choir singing offers a helpful metaphor to understand different concepts in LoP (brokers, engagement, imagination and alignment) and how they are manifested in IPE. Based on similarities between choir singing and IPE, we present four lessons: 1) The teacher sets the tone: a lesson for brokers; 2) You can only learn so much alone: a lesson for engagement; 3) Listening is not as easy as it sounds: a lesson for imagination and 4) A song is more than the sum of its parts: a lesson for alignment. Moreover, we reflect on differences between choir singing and IPE, and insights from these differences.

IoT Based Smart Irrigation System

Smart irrigation refers to an advanced agricultural and landscaping technique that leverages technology, data, and automation to optimize water usage for irrigation. It encompasses the use of sensors, weather forecasts, and automation systems to monitor soil moisture levels, weather conditions, and plant requirements. By employing real-time data and intelligent algorithms, smart irrigation systems aim to deliver precise amounts of water to plants, reducing water wastage, conserving resources, and improving crop yields or landscape health. This approach holds the promise of addressing water scarcity issues and enhancing sustainable agriculture and landscaping practices. Keywords: 1.Arduino IDE program software. 2.Development board ESP8266. 3.Communication devices. 4.Sensors. 5.Watering devices. 6.Drip irrigation.