Understanding land in the context of large-scale land acquisitions: A brief history of land in economics

In economics, land has been traditionally assumed to be a fixed production factor, both in terms of quantity supplied and mobility, as opposed to capital and labor, which are usually considered to be mobile factors, at least to some extent. Yet, in the last decade, international investors have expressed an unexpected interest in farmland and in land-related investments, with the demand for land brusquely rising at an unprecedented pace. In spite of a fast-growing literature analyzing the variety of “spaces” affected by large-scale land acquisitions (LSLAs), the contemporary process of “commodification” of land embedded in this phenomenon has taken present day economists by surprise. This paper reviews the evolution over time of the concept of land in economics and it suggests how different aspects of this evolution are relevant to the understanding of contemporary LSLAs. Rather than presuming to analyze in a systematic and comprehensive manner the immense literature in land economics, this article investigates what makes land a peculiar and complex commodity. Indeed, different branches of economic thought, at different moments in time, pointed out that the location of land in space matters; that land is a living and fundamental component of the ecosystem; that it is a valuable economic asset, and yet, it is often hard to value it in pure monetary terms; eventually, that land is intrinsically connected to societies, cultural and spiritual identities, mores, and institutions. Through a brief history of the evolution of the concept of land in economics, this paper identifies four broad categories—namely, space, economics, environment, and institutions—that help understanding land as a peculiar good. These four elements characterize land as a commodity, as well as its peculiarities, and constitute the prerequisites of a conceptual framework for the analysis and the understanding of the forces at play in the contemporary wave of large-scale land acquisitions

Increasing research impact and visibility from day one: the benefits of Open Research for PhD students

Dr Marcello De Maria – who recently completed his PhD at the University and is now a postdoctoral researcher in the School of Agriculture, Policy and Development – highlights how using open practices during his PhD improved his research and supported his professional development. Open Access publications, Open Data, Open Source software and Open Research networks can be harnessed by PhD students and young researchers to build a competitive advantage from the very beginning of their careers

Compensation for expropriated community farmland in Nigeria: An in-depth analysis of the laws and practices related to land expropriation for the lekki free trade zone in lagos

In Nigeria, the recurring impoverishment and other negative socioeconomic impacts endured by landholders affected by expropriation are well-documented and call into question the Land Use Act’s (LUA) effectiveness in protecting local land rights. The World Bank’s Land Governance Assessment Framework found that, in Nigeria, “a large number of acquisitions occurs without prompt and adequate compensation, thus leaving those losing land worse off, with no mechanism for independent appeal even though the land is often not utilized for a public purpose”. Such negative outcomes may be due to a number of factors, including corruption, limited capacity, and insufficient financing as well as Nigeria’s weak legal framework. According to a recent study of compensation procedures established in national laws of 50 countries, Nigeria’s compensation procedure lags behind many of the countries assessed because the LUA mostly fails to adopt international standards on the valuation of compensation. This article examines Nigerian expropriation and compensation procedures in more detail by combining both an in-depth legal analysis of Nigeria’s expropriation laws as well as survey and qualitative research that indicates, to some extent, how expropriation laws function in practice in Nigeria. Based on our legal assessment, surveys, and interviews with both government and private sector officials involved in the LFTZ, we found that the Nigerian government failed to comply with international standards on expropriation and compensation, both in terms of its laws and its practices in the LFTZ case. This article expands our conference paper written for the UN Economic Commission of Africa Conference on Land Policy in Africa, which took place in Addis Ababa, Ethiopia in November of 2017. Under Nigeria’s LUA, affected landholders are not granted the right to participate in expropriation and compensation decision-making or otherwise be consulted on matters affecting their land and livelihoods. In 2004, the LUA enabled the Lagos State government to set aside 16,500 hectares of expropriated agricultural land from Lagos coastal communities to develop the Lekki Free Trade Zone (LFTZ). Following the expropriation, the Lagos State Government (LSG) and Lekki Worldwide Investment Limited signed a Memorandum of Understand (MOU) with nine affected communities in 2007. The MOU is a legally binding document that promises compensation, alternative land, jobs, healthcare, and educational opportunities to the communities affected by expropriation. However, our research suggests that the MOU has not been fully honored. According to a survey of 140 affected households conducted in August 2017, the government still had not paid sufficient compensation to all affected communities or had not yet provided them with suitable alternative land, jobs, equity shares and other entitlements promised by the MOU. While there are several reasons why the MOU has not been honored, this article mainly focuses on the failure of the LUA to establish binding obligations on government officials to compensation, resettle, and reconstruct the livelihoods of affected landholders. This article argues that the LUA must be reformed so that, whenever land is expropriated for development projects, the government and private sector entities (i.e., acquiring bodies) have a legal obligation to provide sufficient and prompt compensation, alternative land, jobs, equity shares, and other entitlements to affected landholders. Moreover, the LUA should obligate the government and acquiring bodies to follow a transparent and participatory process when expropriating land and compensating communities so that, if properly enforced, the reformed LUA can mitigate the risks commonly associated with expropriation, including landholder impoverishment, displacement, food insecurity, and conflict

Free area estimation in a partially observed dynamic germ-grain model

The estimation problem of the expected local fraction of free area function S for a partially observed dynamic germ-grain model is presented. Properties of the estimators are proved by martingale and product integral methods. Confidence bounds are provided. Furthermore, an estimator of the hazard rate α(t)=−dS(t)/(S(t)dt) is obtained by the kernel function method and asymptotic properties of the estimator are proved and used to find confidence intervals. By a simulated illustrative example, the qualitative behavior of the estimators is shown

Fair compensation in large-scale land acquisitions: fair or fail?

Despite the existence of a legal framework defining the right to fair compensation, and notwithstanding the vast literature on transnational and domestic land deals, no theory has been developed so far to allow for a specific analysis of the economics of fair compensation in large-scale land acquisitions (LSLAs), limiting our understanding of the underlying reasons of success or failure of this important legal protection mechanism. Building on the review of the existing literature on fair compensation and on the critical examination of several real-world case studies, this paper fills this gap by developing a three-player sequential game, which captures the peculiarities of fair compensation in large-scale land deals. We show that, under specific but not uncommon circumstances, the local community will be offered a zerocompensation as a rational consequence of the players’ optimisation, and this will lead to a land conflict, with all players incurring additional costs. Our findings suggest that local populations will be offered – and willing to accept – a compensation that is smaller than their original livelihood, unless they can oppose the land deal at no cost. Thus, the right to consent is inextricably related to the right to reject in LSLAs. If the former is frictionless while the latter comes at a cost, then there is space for strategic behaviours that exploit power imbalances and discretionary processes, and the fair compensation right is, in practice, weakened

Double-J stent insertion across vesicoureteral junction--is it a valuable initial approach in neonates and infants with severe primary nonrefluxing megaureter?

Abstract: Objectives. To evaluate the role of double-J stent insertion in perinatally detected primary nonrefluxing megaureters as a method to temporize treatment in patients with impaired renal function or to prevent function loss in patients treated expectantly, but deemed at high risk of deterioration. Methods. Two neonates and 8 infants with a ureter greater than 10 mm and an obstructive excretion pattern, including 3 cases with renal function less than 40%, were selected to undergo double-J stent insertion for a 6-month period. Patients underwent surgery if the ureter redilated and the excretion pattern was obstructive at reassessment 3 months after stent removal. Results. Stents were placed at a median age of 3 months (range 1 to 6). Open insertion was necessary in 5 cases (50%). Seven patients (70%) developed stent-related complications (five breakthrough urinary infections) requiring early stent removal in 2 (20%). Five patients (50%) underwent surgery at a median age of 14 months (range 13 to 27), including the 3 patients with decreased renal function at presentation. None required ureteral tapering. None experienced any renal function loss with respect to the initial evaluation. Conclusions. Double-J stent insertion across the vesicoureteral junction allows for effective internal drainage of primary nonrefluxing megaureters, but at the cost of a 70% morbidity rate and various technical drawbacks. Therefore, stenting should be considered on a case-by-case basis. The procedure seems valuable to temporize surgery in patients with decreased renal function. However, given the associated morbidity, it seems impractical for patients with preserved function selected in accordance with currently available prognostic indicators

Transurethral incision of duplex system ureteroceles in neonates: does it increase the need for secondary surgery in intravesical and ectopic cases?

Abstract: OBJECTIVE To evaluate the relevance of ureterocele ectopia and associated reflux on the outcome of duplex system ureteroceles (DSU) after neonatal transurethral incision (TUI). PATIENTS AND METHODS The study included 41 neonates with a diagnosis of DSU; the ureterocele was ectopic in 24 (58%). Before TUI, vesico-ureteric reflux (VUR) was present in 13 lower moieties (32%) and seven contralateral ureters (17%). TUI was always performed within the first month of life. The follow-up and management were tailored for each patient from the findings at ultrasonography, voiding cysto-urethrography and renal scintigraphy. Results of intravesical and ectopic DSU were compared using Fisher''s exact test. RESULTS TUI was effective in allowing ureteric decompression in all but one patient (2.4%). After TUI, VUR ceased in six lower ipsilateral moieties and in two contralateral ureters, while new VUR occurred in three contralateral kidneys. De novo VUR in the punctured moiety appeared in 13 cases (32%). Nine upper poles were not functioning. Twenty-one patients (51%) required secondary surgery. Ureteric reimplantation was indicated exclusively for reflux in the punctured moiety in only in two cases (5%), while in a further two iatrogenic reflux in a nonfunctioning upper moiety required total heminephro-ureterectomy. There was no significant difference between intravesical and ectopic ureteroceles in the occurrence of VUR in the punctured moiety, rate of nonfunctioning upper poles or need for secondary surgery. CONCLUSIONS About half of the patients with a DSU need secondary surgery, but this is rarely indicated for de novo reflux in the punctured moiety only. The need for secondary surgery was greater whenever there was associated reflux before endoscopic incision. There was no difference in the outcome of intravesical and ectopic ureteroceles and such distinction seems no longer to be of clinical relevanc

A numerical model of the human cornea accounting for the fiber-distributed collagen microstructure

We present a fiber-distributed model of the reinforcing collagen of the human cornea. The model describes the basic connections between the components of the tissue by defining an elementary block (cell) and upscaling it to the physical size of the cornea. The cell is defined by two sets of collagen fibrils running in sub-orthogonal directions, characterized by a random distribution of the spatial orientation and connected by chemical bonds of two kinds. The bonds of the first kind describe the lamellar crosslinks, forming the ribbon-like lamellae; while the bonds of the second kind describe the stacking crosslinks, piling up the lamellae to form the structure of the stroma. The spatial replication of the cell produces a truss structure with a considerable number of degrees of freedom. The statistical characterization of the collagen fibrils leads to a mechanical model that reacts to the action of the deterministic intraocular pressure with a stochastic distribution of the displacements, here characterized by their mean value and variance. The strategy to address the solution of the heavy resulting numerical problem is to use the so-called stochastic finite element improved perturbation method combined with a fully explicit solver. Results demonstrate that the variability of the mechanical properties affects in a non-negligible manner the expected response of the structure to the physiological action.Comment: 18 pages, 6 figure

G-genotyping of rotaviruses in stool samples in Salento, Italy

Rotaviruses are the most common agents of diarrhoeal illnessin infants and young children. Gastroenteritis caused byrotaviruses is also more likely to be associated with severe dehydration compared to other viral gastroenteritis.We determined the G-genotype of rotaviruses circulating in theSalento. During 2004, 144 stool samples were collected fromsubjects with a positive screening test and stored at -20 °C untilconfirmation could take place using molecular biology techniques. A reverse transcription-polymerase chain reaction (RTPCR) assay for the amplification of gene VP7 of rotavirus wasdeveloped and used; G-genotype was determined by sequencing and phylogenetic analysis. A total of 101 stool samples were detected positive by RT-PCRand 35 were sequence analyzed and classified into G1, G2, G4,G9 and G12 type. The overall relative incidence of G-types inSalento is different to that of other developed countries. Themost prevalent genotype was G2 while genotype G1 was present at low levels. It is also interesting to note the presence ofG9 rotavirus, which is now recognized as the fifth globallyimportant rotavirus genotype.In this study, therefore, we demonstrate the usefulness of a simple method for correctly determining the G genotypes circulating in a geographic region

In vitro diagnosis of sepsis: a review

Marcello Guido,1 Maria Rosaria Tumolo,2 Antonella De Donno,1 Tiziano Verri,3 Francesca Serio,1 Francesco Bagordo,1 Antonella Zizza2 1Laboratory of Hygiene, Department of Biological and Environmental Sciences and Technologies, Faculty of Sciences, University of Salento, Lecce, Italy; 2National Research Council, Institute of Clinical Physiology, 3Laboratory of Physiology, Department of Biological and Environmental Sciences and Technologies, Faculty of Sciences, University of Salento, Lecce, ItalyAbstract: Sepsis, severe sepsis and septic shock, systemic inflammatory response, and other related manifestations represent a relevant medical problem with high morbidity and mortality, despite the improvements in diagnosis, treatment, and preventive measures over the last few decades. The limited knowledge of the pathophysiology in association with the lack of in vitro diagnostic methods for the certain and quick determination of the causative microbiological agents and their antibiotic resistance means the condition is still critical and of high impact in health care. The current gold standard method to detect the sepsis-causing pathogens, which is based on blood culture, is still insufficiently sensitive and slow. The new culture-independent molecular biology-based techniques can lead to the identification of a broad range of microorganisms and resistance markers within a few hours and with high sensitivity and specificity; nevertheless, limitations of, for example, the polymerase chain reaction-based methods still hamper their application in the clinical routine. This review summarizes the in vitro diagnostic methods and their approach in the clinical diagnosis of the bloodstream infections, and explores their advantages and disadvantages at the current state of the art. A quick analysis of the future prospective in multiplex technologies for microbiological diagnosis of sepsis is also provided. Keywords: PCR, PCR/ESI-MS, microarray, MALDI-TOF, next-generation sequencing, FIS