Impacts of Aggregation on Relative Performances of Nonsurvey Updating Techniques And Intertemporal Stability of Input–Output Coefficients

In many instances, and for variety of reasons, input–output researchers are compelled to both employ mechanical techniques to update older survey-based tables as well as using more aggregated ones. This combination, however, gives rise to several concerns. The present paper is an attempt to investigate two such questions. First, the effects of aggregation on the accuracy ranking of selected updating methods, and second, the effects of aggregation on intertemporal stability of the input–output coefficients. To probe these issues, three updating methods were selected. These methods are NAÏVE or constant coefficient hypothesis, RAS or biproportional method, and LaGrangian optimization technique. Two survey-based tables from the former Soviet Union along with the selected updating techniques are used to generate updated target year’s direct and inverse transaction matrices at four aggregation levels. Comparison of the resultant estimates at these four levels of aggregation with their counterparts in the actual benchmark table reveals that a higher level of aggregation neither affects the rankings of the updating methods nor does it universally and unequivocally leads to a higher degree of intertemporal stability of input–output coefficients.     

SEM-EDS analysis and discrimination of forensic soil

Soils vary among different areas, and have some characteristics because of the natural effects and transfers made by human and other living beings in time. So that forensic examination of soil is not only concerned with the analysis of naturally occurring rocks, minerals, vegetation, and animal matter. It also includes the detection of such manufactured materials such as ions from synthetic fertilizers and from different environments (e.g., nitrate, phosphate, and sulfate) as environmental artifacts (e.g., lead or objects as glass, paint chips, asphalt, brick fragments, and cinders) whose presence may impart soil with characteristics that will make it unique to a particular location. Many screening and analytical methods have been applied for determining the characteristics which differentiate and discriminate the forensic soil samples but none of them easily standardized. Some of the methods that applied in forensic laboratories in forensic soil discrimination are the color comparison of the normal air-dried (dehumidified) and overheated soil samples, macroscopic observation, and low-power stereo-microscopic observation, determination of anionic composition by capillary electrophoresis (CE), and the elemental composition by scanning electron microscope (SEM)-energy dispersive X-ray spectrometer (EDS) and other high sensitivity techniques. The objective of this study was to show the effect of the application of 9 tonnes/cm2 pressure on the elemental compositions obtained by SEM-EDS technique and comparing the discrimination power of the pressed-homogenized and not homogenized forensic soil samples. For this purpose soil samples from 17 different locations of Istanbul were collected. Aliquots of the well mixed samples were dried in an oven at 110-120 degrees C and sieved by using 0.5 mm sieve and then the undersieve fraction(<0.5 mm) of these samples put on an adhesive tape placed on a stub. About 100-150 mg aliquots of dried, sieved samples were pressed under 9 tonnes/cm2 pressure by KBr disk preparation apparatus of an infrared spectrophotometer. Surfaces of the randomized particles and the pressed disks of the soil samples were scanned and the elemental compositions were determined with scanning electron microscope JEO-JSM-5600 equipped with an energy dispersive X-ray spectrometer OXFORD Link-ISIS-300. The samples from top of the sieves were examined with stereo-microscope equipped with JVC-TK-128DE color video camera and JVC-GV-PT2, digital video printer. Natural and artificial materials that have characteristic features were identified. Then for additional confirmation all soil samples were dried at 120 degrees C and over 780 degrees C and their colors compared. We concluded that pressing the whole sieved soil samples under 9 tonnes/cm2 pressure results in smashing over the harder particles into the softer matrix and results in homogenization of the soil sample. The elemental compositions of these samples obtained by SEM-EDS with 10-fold less standard deviation (S.D.) values and so that with more reproducibility and discrimination power.     

Empirical examination of public debt sustainability in African economies: A panel data analysis

This study intends to investigate public debt sustainability across 29 Sub-Sahara African (SSA) economies, employing various econometric specifications, for the sampled years 1996–2020. The study employs Bohn's (Are stationarity and cointegration restrictions really necessary for the intertemporal budget constraint? Journal of monetary Economics, 54(7), pp.1837–1847.) framework of sustainability as the baseline model to assess public debt sustainability across the sampled Sub-Sahara African economies. As additional tests of public debt sustainability in order to support the baseline findings, the study also employs panel unit root and timeseries unit tests. The baseline findings from the OLS, panel quantile and instrumental panel quantile regressions show that public debt is sustainable across the panel of SSA economies. The positive and statistically significant response of primary balance under the Bohn's framework of sustainability manifest that the intertemporal budget constraint is not violated in the sampled economies. The consistency in the estimates under the OLS, panel quantile and instrumental panel quantile regressions also show that the estimates are robust throughout the estimation process. Also, utilizing the panel unit root test for public debt sustainability, the findings show that public debt is stationary over the sampled years which implies that intertemporal budget constraint holds and that public debt is sustainable across the sampled SSA economies. However, the timeseries analysis indicate that although majority of the SSA economies have sustainable public debt ratios, four countries namely Uganda, Sudan, Togo and Cote d'Ivoire have unsustainable public debt ratios. The study has important policy implications in terms of prudent public debt management and fiscal management for the sampled SSA economies.     

Expert Consensus on Factors Reducing Policy Coherence in the Context of Iran: Delphi-AHP

A web of public policies needs to display coherence to achieve their superior goal-improving quality of people’s live. Policy coherence (PC) ideally means policies with no contradictory effects. This article addresses complex issue of PC bottlenecks in general and in Iran in particular. In the first stage, Delphi Technique is used to identify factors reducing PC. A panel of experts reached on consensus on factors that are categorized in nine groups. In the second stage, the experts determined relative weightings of identified factor based on analytic hierarchy process (AHP). This article is focused on the more important factors. These Findings may be useful for other developing countries and developed countries.     

Trends in Public Administration Research: A Content Analysis of Iranian Journal Articles (2004-2017)

This study aims to examine the trends of public administration research in Iran during 2004–2017. A total of 520 articles from three databases have been reviewed and analyzed using content analysis. Results are reported based on research themes, purposes, orientations, methods, and authorship. Comparisons are made across two time spans and by journal type. Findings indicate that the focus of public administration research has been on issues of public administration, Islam and public administration, administrative performance, and organizational behavior in the public sector. Observations reveal that recent Iranian research studies have more explanatory purposes and often apply qualitative methods. The study also concludes that the Iranian public administration research has advanced considerably over the past 14 years, but more efforts are needed to fill in the gap in such important areas as new public service, civic participation, globalization, policy making, sound governance, and policy implementation.     

Counterspace Operations and Nascent Space Powers

In twenty-first-century warfare, satellites have become indispensable for gaining dominance in battlespace. This highlights the need to protect space assets while countering the qualitative edge that space can provide to adversarial actions. Hence, “counterspace operations” continue to gain the attention of military planners and researchers around the globe. Although it is the major space powers that have developed requisite capability and are showing more concerns for space security, these concerns are global in nature. As such, there is a need to develop a framework that can be utilized by nascent space powers to ensure protection of their space assets. This research work is intended to draw the attention of policymakers, space-technology protagonists, and military personnel, particularly of nascent space powers, to these global concerns. It gives an overview of counterspace operations and explores the doctrinal view-point of major military space powers for safeguarding their own space programs and negating the advantage of space to the enemy. Based upon this, a step-by-step approach is proposed for nascent space powers for embodying of elements of counterspace operations to remain protected during peace, crisis, or war.     

Female genital cutting in Egypt: drivers and potential responses

ABSTRACT

Female genital cutting (FGC) is a major issue at the interplay of faith and health in development. The practice is in part faith-inspired, and has clear negative health impacts. The prevalence of FGC remains especially high in Egypt. This article reflects on some of the factors that lead to the perpetuation of the practice by analysing data from the 2014 Survey of Young People in Egypt. The focus is on whether religiosity, acceptance of traditional gender roles and discrimination, attitudes towards women’s autonomy, and age at marriage affect attitudes towards FGC, controlling for other factors. The results suggest that all these factors do indeed play a role.     

Enhancing Smallholder Access to Agricultural Machinery Services: Lessons from Bangladesh

Resource poor smallholders in developing countries often lack access to capital goods such as farm machinery. Enabling adequate access through machinery services can thereby significantly contribute to food security and farm incomes. At the core of the service provision model is the lead farmer, who makes the initial investment in agricultural machinery, and provides services to others on a fee-for-service basis. Profiling the lead farmers can thereby provide important lessons and scaling implications. The present paper provides a case study of Bangladesh, using primary data to characterise the lead farmers. General education, credit availability and risk taking attitude play significant roles in whether or not a farm household will be a lead farmer in Bangladesh.