Internally Displaced Research Articles

Phase stability of convergence zone propagation at mid-frequency.

Mid-frequency transmissions (1.5 to 7.5 kHz) from a towed source to a drifting array one convergence zone away demonstrate smoothly varying phase. Calculations of the strength and diffraction parameters Φ and Λ for a representative background environment predict partially saturated propagation. For a single convergence zone path, the evolving phase rate due to the changing internal wave field corresponds to a narrowband coherent integration time, defined by the length of a discrete Fourier transform that likely captures the signal, from ∼370 s at 10 kHz to ∼1370 s at 1 kHz in the absence of source motion. Simulated propagation with a split-step parabolic equation solver through a sound speed field with thermocline fine structure and a Garrett-Munk internal wave displacement field provides a full wave picture that is consistent with the statistical predictions. Experimental data from the Philippine Sea demonstrates signal phase that is highly correlated with source tow body vertical excursions, measured by a pressure sensor, that couple into horizontal motion. The received signal can be integrated for up to 128 s at 5.5 kHz, with the upper limit thought to be due to non-uniform source motion rather than ocean dynamics.

Sub-chronic Toxicological Evaluation of Drinking Water from Internally Displaced Persons (IDP) Camp in Wassa, Federal Capital Territory, Abuja, Nigeria

The number of Internally Displaced Persons (IDPs) camps has increased recently in Nigeria due to insurgency and natural disasters such as floods. This study aimed to evaluate the sub-chronic toxicological effects of the source of the drinking water in Wassa camp, Abuja, Nigeria. Forty-eight (48) mice were randomized into four (4) groups of twelve (12) mice each and orally administered different concentrations (5, 10, and 20 mL/kg body weight respectively) of the water sample from Wassa IDP for fourteen (14) days. The alteration was noticed in the liver and kidney indices of mice by a significant increase (p<0.05) in kidney-body weight ratio, kidney, liver and plasma protein concentrations, and a considerable decrease (p<0.05) in albumin, creatinine, uric acid and total bilirubin concentrations, 14-days post-treatment, particularly at a higher dose. Gamma-glutamyl transaminase in the liver and aspartate transaminase in both liver and kidney significantly (p<0.05) increased in mice with a resultant significant decrease (p<0.05) in the serum, 14 days post-treatment at 20 mL/kg bwt. There was no significant difference (p>0.05) observed in serum triglycerides, very-low-density-lipoprotein cholesterol concentrations at all doses 14-days post-treatment compared with the control but the concentrations of serum low-density-lipoprotein cholesterol and total cholesterol significantly reduced (p<0.05) at 20 mL/kg bwt 14-days post-treatment. The drinking water altered some liver-function indices while the cardiac-function indices were less affected. Therefore, prolonged consumption of the water may not be relatively safe. The provision of clean drinking water for the Wassa IDP camp will prevent adverse biochemical reaction reactions from prolonged water consumption.

WASH services and menstrual hygiene management among reproductive age females in the IDPs camps of Shire town in Tigray region of Ethiopia: a cross- sectional study

Menstruation is a natural cyclic occurrence experienced by reproductive age females in a good health which deemed a proper management, otherwise, it ends with various health complications and impaired quality of life. The aim of this study was to investigate the menstrual hygiene management practice and its determinant factors among reproductive age females living in the IDPs camps of Shire town, Northern Ethiopia. A cross-sectional study was conducted among 633 reproductive age females in Shire town from May to June 2022. Data were entered, cleaned, and analyzed using SPSS version 23. Descriptive analysis and binary and multivariable logistic regression were conducted to obtain the descriptive findings and to investigate the strength of the association respectively. P-value < 0.05 was considered statistically significant. The prevalence of good menstrual hygiene management practice among the reproductive age females was 41.9% (95% CI, 38-45.8%). Menstrual hygiene management practice was significantly (p < 0.05) associated with access to sanitary materials, educational level, availability of continuous water supply and sex-separated latrines. The results of this study demonstrated that more than a half of the reproductive age females did not have good menstrual hygiene management practices. Consequently, it is recommended to work collaboratively to enhance the menstrual hygiene practice, especially in IDPs camps.

Ecological study measuring the association between conflict, environmental factors, and annual global cutaneous and mucocutaneous leishmaniasis incidence (2005-2022).

Cutaneous and mucocutaneous leishmaniasis (CL/ML) cause significant morbidity globally and are vulnerable to changes from environmental events and conflict. In this ecological study, we aim to measure the associations between annual CL/ML cases, conflict intensity, and environmental factors between 2005 and 2022 globally. We pulled annual case data from the WHO for 52 nations that had conflict intensity scores (ranging from 1-10) from the Bertelsmann Transformation Index. Using Earth observation tools, we gathered temperature, precipitation, vegetation, and humidity data, in addition to data on annual estimates of population, internal displacement, and GDP. We fit a negative binomial generalized additive model with a random nation-level intercept. Conflict was positively associated with increased CL/ML across the studied nations (IRR: 1.09, 95% CI: 1.01-1.16, p = 0.02). Given this, intense conflict (a score of ten) was associated with over double the risk of CL/ML compared to the lowest conflict levels (score of one). We also identified a curvilinear relationship between mean temperature and cases, as well as between vegetation level and cases. Each had small pockets of significant increased and decreased risk, respectively. Larger mean humidity ranges were negatively associated with cases. Importantly, the relationship between conflict intensity and cases was mediated by displacement. Conflict is significantly associated with increased CL/ML cases. This is especially true at higher conflict levels, marking when conflict turns violent. The destruction of critical infrastructure (e.g., that related to healthcare, water, and sanitation) often seen during conflict could drive this association. Such environments can be hospitable to sandflies and can heighten individuals' vulnerability through increased malnutrition, poverty, and displacement. Understanding this relationship is crucial for public health preparedness and response, especially as conflicts become increasingly violent and protracted.

Cost optimization in structural design for reinforced concrete frames using Jaya algorithm

This study analyzes and optimizes the structural design of three-dimensional (3D) reinforced concrete framestructures to minimize the amount of two main materials, including concrete and steel reinforcement, used inreinforced concrete frames. Jaya algorithm was developed based on evolutionary algorithms to build the structural optimization model. The objective function (minimum material cost) with variables being column andbeam cross-sections was set up. In which, the constraints related to the maximum internal force and displacement being in the structural members satisfy limited strength and serviceability requirements. A subroutine written in Python was used to connect the optimization process to the structural analysis software, ETABS. The 3D reinforced concrete frame of a three-story building was selected for cost and design optimization analysis. In which, the optimization problem was solved in cases of three different maximum numbers of iterations, including 20, 35, and 50. In each iteration level, a setting of five independent runs was performed. The subroutine proved to be fast, robust, and convenient manner for solving optimization problems in designing 3D reinforced concrete frames. In which, the best optimal cost might be obtained after twenty iterations and the better convergence behavior occurred at higher numbers of iterations. The study results showed that, for this reinforced concrete frame, applying optimal design led to a materials cost reduction (success rate) by 33.67% compared to that of the conventional design. This success rate would fluctuate according to different nations’ design codes.

Country on the Move: Comparing the Impacts of Service Provision During the Waves of Displacement Before and After Full-Scale Aggression Against Ukraine

AbstractThe ongoing war in Ukraine demands a comprehensive and holistic state-level and social work response. This should address the psychosocial, economic, relational, and family reintegration aspects of the crisis and the needs and human rights of those affected by war-related displacement and migration. While the current global media has primarily focused on refugees leaving Ukraine, the severity of the impact of this conflict on those displaced within the Ukrainian nation’s borders has been largely overlooked. This study explores Ukrainian responses to internally displaced people during the first and second waves of war-induced displacement and internal migration in Ukraine, which took place after the annexation of Crimea in 2014 and after the full-scale invasion of 2022. It also critically examines the UK’s response to Ukrainian refugees arriving in the UK. Analysis of a review of the existing literature reveals significant differences in Ukraine’s support provision for internally displaced people (IDPs) during each wave, as well as key strengths and limitations in UK support for externally displaced Ukrainian refugees (EDPs). During the first wave, the Ukrainian state failed to fully address the needs of IDPs and protect their human rights. Although Ukrainian support for internally displaced persons has improved with the second wave, significant limitations in the provision of support remain alongside weaknesses in the UK provision of support for externally displaced Ukrainian refugees. The article concludes that incorporation of the lessons learned from the experiences of Ukrainian IDPs and EDPs is essential for improving the provision of services both in Ukraine and in receiving countries.

Analysing the local governance of internal displacement: an emerging (local) social contract in eastern Ukraine since 2014

There is growing recognition of the challenges faced by internally displaced people as well as the potential for subnational actors to contribute to durable solutions. Despite this, we know little about local government responses, both in theory and practice. This paper draws on governance theories, practitioner experience and secondary literature to analyse the governance context, processes and interactions that shape the experience of internal displacement in eastern Ukraine between 2014 and 2022. It argues that nascent relationships built between internally displaced people and local governments in eastern Ukraine reveal the possibility of bottom-up state-led responses. The paper intervenes in debates around rebuilding a “social contract” as a mechanism for resolving displacement, demonstrating why attention must be paid to how this occurs at local levels in places of refuge.

Suppression of shear ionic motions in bismuth by coupling with large-amplitude internal displacement

Suppression of shear ionic motions in bismuth by coupling with large-amplitude internal displacement

Seismic performance of pentagonal type aluminum alloy suspen-dome structure with large opening

Prestressing technology is an effective way to enhance the mechanical properties of space structures. In view of this, a new pentagonal type aluminum alloy suspen-dome structure with large opening is proposed in this paper by introducing the lower cable support system into the aluminium alloy single-layer reticulated shell structure. The seismic performance of this new structure is investigated using time-procedure analysis. Firstly, the effects of rise-span ratio, thickness-span ratio, prestressing level, horizontal radius factor for lower chord nodes and roof loading on the free vibration characteristics of the structure with different supporting stiffness are investigated. The distributions of internal forces and displacements of members of overall structure considering lower support and roof structure only are analyzed. Subsequently, the dynamic response of the structure under seismic combinations of different dimensions and directions is investigated, and reasonable combinations that should be considered for simplified analyses are derived. Furthermore, seismic internal force coefficients are introduced to assess the degree of seismic effects on various types of members. On this basis, parametric analysis of the seismic performance of the structural performance is conducted and quantitative assessment of the sensitivity of the parameters is carried out. Additionally, the free vibration characteristics and dynamic performance of steel and aluminium suspen-dome are compared. The results show that considering the supporting structure weakens the structural stiffness while increasing the structural dynamic response; reasonable values of key parameters in the seismic design of the structure are obtained; and the rise-span ratio and thickness-span ratio are important influencing factors of the seismic performance of the structure. Besides, the internal forces of members in aluminium alloy suspen-dome are less affected by seismic effects than those in steel suspen-dome, and the new structure has good seismic performance.

The city the earthquake built: internal displacement, international aid and state–society relations in the “fragile city” of Canaan

This paper revisits the case of Canaan – a massive informal settlement that emerged in the wake of the devastating 2010 earthquake in Haiti – in order to examine the often-forgotten aftermath of international aid programming in an urban, fragile-state context. Originally categorized as an (informal) internal displacement site, Canaan continued to expand in the years following the quake, reaching an estimated population of 300,000 by 2016. Using a qualitative case study of Canaan conducted nearly 15 years after its creation, the paper makes two interrelated arguments: first, that the ways in which the United Nations’ “durable solutions” framework is frequently understood and applied may be unrealistic and even deleterious for state–society relations in some fragile urban contexts. Second, even calls to shift (urban) internal displacement programming to a more development footing is far from a panacea if these interventions are not designed to be more politically nuanced, context-sensitive and modest about what can be achieved in such complex environments.

Multi-objective optimization design of low-power-driven, large-flux, and fast-response three-stage valve

Intrinsically safe solenoids drive solenoid valves in coal mining equipment. The low power consumption of these solenoids limits the response time of the solenoid valves. Additionally, the low viscosity and high susceptibility to dust contamination of the emulsion fluid often lead to leakage and sticking of hydraulic valves. This study proposes a low-power-driven, large-flux, fast-response three-stage valve structure with an internal displacement feedback device to address these issues. The critical parameters of the valve were optimized using a novel multi-objective optimization algorithm. A prototype was manufactured based on the obtained parameters and subjected to simulation and experimental verification. The results demonstrate that the valve has an opening time of 21 ms, a closing time of 12 ms, and a maximum flow rate of approximately 225 L/min. The driving power of this structure is less than 1.2 W. By utilizing this valve for hydraulic cylinder control, a positioning accuracy of ± 0.15 mm was achieved. The comparative test results show that the proposed structural control error fluctuation is smaller than that of the 3/4 proportional valve.

First imported Cases of MPXV Clade Ib in Goma, Democratic Republic of the Congo: Implications for Global Surveillance and Transmission Dynamics.

The ongoing national mpox outbreak in the Democratic Republic of the Congo has resulted in more >30,000 suspected cases in the country from January 2023 to August 2024. While these historic case totals have been driven by primarily by zoonosis, the emergence of Clade Ib monkeypox virus (MPXV), which is connected to more sustained human-to-human transmission, has been associated with increasing public health impacts in eastern DRC. First identified in South Kivu province, Clade Ib MPXV has been identified in multiple non-endemic East African countries for the first time. In DRC, there have been concerns over broader Clade Ib expansion in the country that could further complicate containment and mitigation responses. Here, we report the first introductions of Clade Ib into North Kivu province, including within internal displacement camps, with suspected close contact transmission that includes non-intimate contacts and children. These findings demonstrate that mpox case investigations and community messaging campaigns should include considerations for non-sexual contact-mediated transmission of Clade Ib that includes children <15 years.

Consideration of Different Soil Properties and Roughness in Shear Characteristics of Concrete–Soil Interface

To investigate the impact of diverse soil characteristics and surface irregularities on interfacial shear strength attributes, a large-scale straight shear apparatus and particle flow software were employed to conduct interfacial shear experiments with varying soil properties and surface irregularities. The results demonstrated that, under an identical R and normal stress conditions, the clay and silty clay shear stress–displacement curves exhibited strain softening, while the silt curve exhibited strain hardening. An increase in R can markedly enhance the peak shear strength at the interface, although a critical value exists beyond which this effect is no longer observed. The Rc is primarily contingent upon the soil properties. Numerical simulations demonstrate that the internal shear displacement and deformation resulting from the diverse soil properties are distinct. Clay particles are constituted of varying-sized particle aggregates that collectively resist shear. Silt particles resist shear through interfacial friction generated by shear. The practicality of Duncan and Clough’s constitutive model for interfacial shear with roughness influence is verified, and the constitutive model under strain hardening is modified.

Return reimagined: Diaspora interactions with protracted internal displacement in post-war Sri Lanka

This paper aims to study transnational diasporic interactions with the internal return of protracted displaces, using two cases from directly war-affected regions of Sri Lanka. This paper contributes to the conceptualization of return by analyzing the complexities arising through diaspora engagement in post-war return and recovery of internally displaced people. Split returns—of near and far diasporas in the form of short-term, temporary family visits—shape protracted returns in post-war situations. Diaspora’s collective memory that results in diaspora transnationalism requires an engagement in rights-based issues such as access to and ownership of land in which the diasporas directly or indirectly intervene.

Addressing disaster-related internal displacement through participatory initiatives

One of the most severe consequences of disasters on people's lives is displacement. When their homes or places of habitual residence are too badly damaged, and their support networks or socioeconomic resources do not allow them to repair and stay in disaster-affected areas, they are forced to leave their homes temporarily or forever. In disaster risk reduction practice, it is therefore essential to take displacement in consideration and incorporate measures to prevent it, or mitigate it as much as possible.The Internal Displacement Monitoring Centre (IDMC), which has been recognized by the United Nations as a key provider of data on internal displacement at the global level, started documenting promising and successful initiatives that have managed to do so in various countries and disaster contexts. One of the main takeaways from this research is that participatory approaches that involve affected communities tend to be much more impactful and sustainable than others.From drought-affected communities in sub-Saharan Africa to urban settlements repeatedly ravaged by Monsoon floods in Asia, this brief practitioner article presents selected case studies to show how participation can contribute to overcoming some of the most frequent challenges of prevention and response to disaster displacement around the world.

Reading My Father’s Leggìo: An Autotopography of Mourning in Translation

This essay is part of a wider project of autoethnographic exploration of the memory- and place-making function that keepsake objects perform in the context of the multi-scalar and more-than-human temporalities of colonial modernity and its pervasive geographies of displacement. In it, I engage in quiet conversations with an object associated with my father’s life, illness, and death in Bari, Italy – a wooden bookstand, or leggìo, which my father made out of repurposed wood. For over twenty years, this leggìo actively interacted with my spaces of migrant dwelling, affectively modulating my discomfited sense of hyphenated belonging among urban domestic interiors in Canada – at times attenuating my internal displacements and longings and at others amplifying them. This essay converses with the strange animacy accrued by the leggìo over the decades, at first just triggering my own personal memory work, but then moving outward into more difficult and demanding ethical questions about environmental stewardship and decolonial futurity, once I start interrogating the object’s material components and their manufactured provenance.

Resilience, avoidant coping and post-traumatic stress symptoms among female Ukrainian refugees and internally displaced people.

Since the Russian full-scale invasion of Ukraine, over 10 million Ukrainians have been displaced from their homes. This has contributed to an increase in post-traumatic stress (PTS) symptoms in both refugees and internally displaced persons (IDPs). Previous research has suggested that refugees may experience higher levels of PTS due to additional stressors inherent in migration to a new country, language barriers and separation from family and social support. PTS symptoms may also be exacerbated by avoidant coping which we proposed would be more prevalent amongst refugees because of the isolating effects of migration-related stressors. The present study aimed to investigate the relationship between PTS symptoms, resilience and avoidant coping in refugees and IDPs. We predicted that refugees would report higher levels of PTS symptoms and use of avoidant coping strategies, and that avoidant coping would mediate the effect of resilience on PTS symptoms. We tested a moderated mediation model to examine whether this effect differed between IDPs and refugees. A total of 229 women (108 IDPs and 121 refugees), who were displaced after the full-scale invasion, were recruited using online platforms and volunteering centres. They completed an online questionnaire comprising measures of PTS, resilience and coping. We found no significant differences in resilience, PTS symptoms or reported use of avoidance coping strategies between refugees and IDPs. As expected, avoidance coping mediated the negative association between resilience and PTS symptoms, but no group differences in this effect were observed. Contrary to previous research, our findings indicate that PTS symptoms may be similarly problematic for refugees and IDPs. This may be due to increased time since the invasion as many refugees may have had time to adjust. Use of avoidant coping strategies may exacerbate PTS symptoms and our study highlights the need for mental health interventions aimed at reducing PTS symptoms in Ukrainian IDPs and refugees through fostering resilience and adaptive coping strategies.

Investigating the Consequence s of Energy Transitions in Protracted Displacement Settings: Solid Fuel Dependency and IDPs’ Readiness

Abstract Looking beyond cooking energy provision in humanitarian response, interventions define the course of the internally displaced people’s (IDPs) livelihood. Energy transition in displacement settings often puts the bar high as the outputs are aimed to provide full use of low emission, healthy, clean cooking energy sources. By gathering data from protracted temporary settlements inhabited since 2012 by those affected by the Mount Sinabung eruption in Karo Regency, Indonesia, the purpose of this study is to look into how Internally Displaced Persons (IDPs) are switching to greener energy sources for cooking. A framework for determining energy choice at the household size was employed to depict the overview of energy use in cooking, taking into account the effects of the transition. The case of Sinabung displacement offered a perspective of the prolonged IDPs on humanitarian energy interventions and the national ecosystem toward clean energy behaviour. Even though Liquid Petroleum Gas (LPG) penetration is subsidized, a protracted displacement situation in Sinabung still reveals solid fuel dependencies. The LPG subsidy program, which was poorly planned, and the lack of readiness of IDPs to purchase and use new alternative cooking energy were the biggest obstacles to the overall transition process and caused the fuel stacking phenomenon to persist.

Reconsidering the Task, Methods, and Aims of Reading the Gospels in the Present Myanmar Context

The confessional doctrine of the exalted post-Easter Jesus, divine saviour, planted by nineteenth-century missionaries, has a long tradition in Myanmar churches. In order to equip these churches for the current Myanmar context, it is time to decolonize the Western heritage of confessional reading of the New Testament. It is essential to reread the Jesus tradition recorded in the Gospels in the specific contexts of then and now. Thus, this paper argues that in the current context of the critical situation in Myanmar, the exalted Christian saviour does not save the suffering citizens from life-threatening war or injustice, nor churches from being destroyed by abusive authority. This exalted heavenly Christ does not liberate the suffering people from the physical, spiritual, and mental sufferings inflicted on them. Nor does he liberate them from the homelessness or IDP camps or from their status as outcasts. What is needed instead is a contextual reading of the life of Jesus, within the Jewish context of second temple Judaism. This theopolitical Jesus encourages Myanmar Christians and the citizens of Myanmar; he becomes a sympathetic figure sharing comparable troubles and an example of how to stand up for the people who suffer injustice and to engage in the work of restoration.

Design of a Six-Story Teaching Building: A Comprehensive Approach to Safety and Structural Efficiency

This paper describes teaching building design. The project, designed for the teaching building, prioritizes safety in its main structure, a reinforced concrete frame with six floors above ground. The story heights are 4.2m, 3.9m, 3.9m, 3.9m, 3.9m and 3.9m, respectively, and the building's total height is 27.6m. The construction site category is classified as type II, and the first group's seismic fortification intensity is 7 degrees. The process includes architectural design, structural design, and PKPM checking calculation. Architectural design mainly consists of a general description. The plan, elevation, section, and draft of the corresponding building are drawn according to the relevant information and requirements provided by the design task book. Structural design mainly includes load statistics, calculation of internal force and displacement of the frame, a combination of internal force, and calculation of staircase, slab roof, floor slab and frame structure. The calculation of displacement, internal force, and reinforcement of the whole frame structure is carried. Out using PKPM. In the course of architectural design, safety is a paramount consideration, in line with the principles of safety, applicability, beauty, economy, and energy-saving requirements, referring to national standards and relevant materials, and strictly following the requirements of relevant architectural design standards, the design of each link is not only a comprehensive scientific consideration of its own but also a related discussion with teachers, as detailed in the construction plan. The frame structure is adopted,in this structural type. It mainly includes structure layout and calculation sketch determination, load calculation, internal force calculation, internal force combination, main beam section design, and reinforcement calculation, frame column section design and reinforcement calculation, secondary beam section design and reinforcement calculation, floor and roof design, staircase design etc. Among them, the D-value method is used to calculate the internal force of the structure under horizontal load, and the distribution method is used to calculate the internal force of the structure under vertical load (dead load and live load).