Archaeology of Igboland, Southeastern Nigeria

2021 ◽  
Author(s):  
Chioma Ngonadi
Keyword(s):  
Large Scale ◽  
Archaeological Research ◽  
African Countries ◽  
Southeastern Nigeria ◽  
The Past ◽  
Ground Stone ◽  
Iron Smelting ◽  
Igbo People ◽  
Iron Working ◽  
Polished Stone Axes

Archaeological research began relatively late in southeastern Nigeria compared with other African countries. The site of Igboukwu, despite the remarkable discoveries made there accidentally in 1938, was not investigated thoroughly until 1959. The first systematic archaeological excavations in the region took place between December 1959 and January 1960. The Igboukwu excavations yielded hundreds of glass beads, intricately produced bronze objects, elaborately decorated potsherds, and various iron tools that revealed the artistic ingenuity of the Igbo people. These archaeological findings laid a good foundation for archaeological research in southeastern Nigeria. Subsequently, from 1964 to 1978, human-made tools including hand axes, flakes, cores, polished stone axes, ground stone axes, and microliths were discovered at various locations in the region. At the Lejja, Opi, and Aku iron smelting sites, evidence of slag blocks, tuyere fragments, furnace remains, iron ores, and potsherds are seen on the surface, suggesting large-scale intensive iron-working production in the past. These archaeological remains from stratified archaeological deposits showcase a people with a distinctive past.

scholarly journals Survei Arkeologis di Kawasan Halmahera Bagian Tengah

2016 ◽  
Vol 9 (1) ◽  
pp. 13
Author(s):  
Marlon NR Ririmasse
Keyword(s):  
Cultural Heritage ◽  
Large Scale ◽  
Geographic Area ◽  
Mining Area ◽  
Karst Area ◽  
Archaeological Research ◽  
Historical Process ◽  
Northeast Region ◽  
The Past ◽  
Culture History

Halmahera is one main island in the northeast region of Wallacea. Having a uniquely environmental profile, Halmahera also serves as a home for a long cultural historical process of this region. Including for archaeological studies. Numbers of preliminary studies have been conducted to understand the dynamic of region’s culture in the past. Unfortunately, the quantity and the depth of these studies have not equivalent to the colossal potential of Halmahera’s culture history. This research is a part of the efforts to contribute in completing our knowledge on the dynamics of culture history in Halmahera. Focus of this research is to identify the archaeological potential in the geographic area of Central Halmahera. The opening of the large scale nickel mines in this region which is potentially threaten the preservation of the cultural heritage is the main consideration in chosing the research locus. Prelimenary survey has been adopted as an approach in this research. This study found that the region of Central Halmahera is a high potentially area for archaeological research according to the large coverage of the karst area in this region. Rescue and preservation action of sites in the mining area is absolutely necessary in order to maintaining the existence of all cultural heritage in the region.Halmahera merupakan salah satu daratan utama di timur laut kawasan Wallasea. Tidak hanya memiliki profil lingkungan yang khas, Halmahera juga merupakan rumah bagi proses panjang sejarah budaya kawasan. Termasuk bagi studi arkeologis. Berbagai kajian awal telah dilakukan untuk memahami dinamika budaya masa lalu di wilayah ini. Meski demikian kuantitas dan kedalamannya kiranya belum berbanding lurus dengan potensi raya sejarah budaya Halmahera sebagai sebuah kawasan. Kajian ini merupakan bagian dari upaya dalam berkontribusi melengkapi pengetahuan terkait dinamika sejarah budaya di wilayah Halmahera. Fokus penelitian diarahkan untuk menemukan segenap potensi arkeologis dalam lingkup geografis Halmahera Bagian Tengah. Pembukaan tambang nikel berskala besar di wilayah ini yang mengancam kelestarian warisan budaya menjadi salah satu pertimbangan utama dalam penentuan lokus. Survei penjajakan diadopsi sebagai metode dalam kajian ini. Hasil penelitian menemukan bahwa wilayah Halmahera Tengah memiliki potensi tinggi secara arkeologis mengacu pada bentang luas kawasan karst yang potensial sebagai hunian masa lalu dan segenap jejak tradisi yang masih melekat dalam keseharian masyarakat. Tindakan penyelamatan dan pelestarian atas situs-situs dalam pertambangan nikel mutlak diperlukan untuk menjaga eksistensi segenap warisan budaya dalam kawasan.

Twenty-Five Years of Eastern Archaeology

1961 ◽  
Vol 27 (1) ◽  
pp. 16-23 ◽  
Author(s):  
William G. Haag
Keyword(s):  
Radiocarbon Dating ◽  
Large Scale ◽  
Biological Data ◽  
Ecological Approach ◽  
Archaeological Research ◽  
Eastern United States ◽  
The Past ◽  
Time Estimates ◽  
Interdisciplinary Approaches ◽  
Recent Developments

AbstractArchaeological research in the Eastern United States is reviewed from the period of large-scale excavations sponsored by federal relief agencies to the present period of trend toward interdisciplinary approaches. An early interest was the identification of the archaeological ancestors of historically and ethnographically known tribes. The need for objective and descriptive classifications led to the development of the McKern or Midwestern Taxonomic Method. Recent developments include the use of functional and evolutionary concepts experimentation with statistics to validate analytical and classificatory techniques, discovery of stratigraphic evidence and the perfection of seriational techniques, emphasis on the value of geological and biological data and the combination of these with archaeological information to produce an ecological approach, and attempts at broad culture-historical synthesis. The introduction of radiocarbon dating, which exposed the extremely conservative time estimates of Eastern archaeologists by greatly lengthening the chronologies, is seen as the major contribution of the past 25 years.

Molecular Epidemiology and Biomarkers in Etiologic Cancer Research: The New in Light of the Old

2020 ◽  
Author(s):  
Lungwani Muungo
Keyword(s):  
Gene Expression ◽  
Cancer Research ◽  
Molecular Epidemiology ◽  
Exposure Assessment ◽  
Large Scale ◽  
First Generation ◽  
Cancer Epidemiology ◽  
Policy Changes ◽  
The Past ◽  
New Generation

The purpose of this review is to evaluate progress inmolecular epidemiology over the past 24 years in canceretiology and prevention to draw lessons for futureresearch incorporating the new generation of biomarkers.Molecular epidemiology was introduced inthe study of cancer in the early 1980s, with theexpectation that it would help overcome some majorlimitations of epidemiology and facilitate cancerprevention. The expectation was that biomarkerswould improve exposure assessment, document earlychanges preceding disease, and identify subgroupsin the population with greater susceptibility to cancer,thereby increasing the ability of epidemiologic studiesto identify causes and elucidate mechanisms incarcinogenesis. The first generation of biomarkers hasindeed contributed to our understanding of riskandsusceptibility related largely to genotoxic carcinogens.Consequently, interventions and policy changes havebeen mounted to reduce riskfrom several importantenvironmental carcinogens. Several new and promisingbiomarkers are now becoming available for epidemiologicstudies, thanks to the development of highthroughputtechnologies and theoretical advances inbiology. These include toxicogenomics, alterations ingene methylation and gene expression, proteomics, andmetabonomics, which allow large-scale studies, includingdiscovery-oriented as well as hypothesis-testinginvestigations. However, most of these newer biomarkershave not been adequately validated, and theirrole in the causal paradigm is not clear. There is a needfor their systematic validation using principles andcriteria established over the past several decades inmolecular cancer epidemiology.

An Assessment of a Low-Cost Wastewater Disposal System after Twenty-Five Years of Operation

1987 ◽  
Vol 19 (5-6) ◽  
pp. 701-710 ◽  
Author(s):  
B. L. Reidy ◽  
G. W. Samson
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Wastewater Disposal ◽  
Industrial Base ◽  
Industrial Wastewaters ◽  
The Past ◽  
Gasification Process ◽  
Appropriate Treatment ◽  
Environmentally Safe ◽  
Coal Resource

A low-cost wastewater disposal system was commissioned in 1959 to treat domestic and industrial wastewaters generated in the Latrobe River valley in the province of Gippsland, within the State of Victoria, Australia (Figure 1). The Latrobe Valley is the centre for large-scale generation of electricity and for the production of pulp and paper. In addition other industries have utilized the brown coal resource of the region e.g. gasification process and char production. Consequently, industrial wastewaters have been dominant in the disposal system for the past twenty-five years. The mixed industrial-domestic wastewaters were to be transported some eighty kilometres to be treated and disposed of by irrigation to land. Several important lessons have been learnt during twenty-five years of operating this system. Firstly the composition of the mixed waste stream has varied significantly with the passage of time and the development of the industrial base in the Valley, so that what was appropriate treatment in 1959 is not necessarily acceptable in 1985. Secondly the magnitude of adverse environmental impacts engendered by this low-cost disposal procedure was not imagined when the proposal was implemented. As a consequence, clean-up procedures which could remedy the adverse effects of twenty-five years of impact are likely to be costly. The question then may be asked - when the total costs including rehabilitation are considered, is there really a low-cost solution for environmentally safe disposal of complex wastewater streams?

Recent Progress in Machine Learning-based Prediction of Peptide Activity for Drug Discovery

2019 ◽  
Vol 19 (1) ◽  
pp. 4-16 ◽  
Author(s):  
Qihui Wu ◽  
Hanzhong Ke ◽  
Dongli Li ◽  
Qi Wang ◽  
Jiansong Fang ◽  
...  
Keyword(s):  
Machine Learning ◽  
Drug Discovery ◽  
Large Scale ◽  
Recent Progress ◽  
High Specificity ◽  
Learning Approaches ◽  
Anticancer Peptides ◽  
The Past ◽  
Traditional Approaches ◽  
Large Scale Screening

Over the past decades, peptide as a therapeutic candidate has received increasing attention in drug discovery, especially for antimicrobial peptides (AMPs), anticancer peptides (ACPs) and antiinflammatory peptides (AIPs). It is considered that the peptides can regulate various complex diseases which are previously untouchable. In recent years, the critical problem of antimicrobial resistance drives the pharmaceutical industry to look for new therapeutic agents. Compared to organic small drugs, peptide- based therapy exhibits high specificity and minimal toxicity. Thus, peptides are widely recruited in the design and discovery of new potent drugs. Currently, large-scale screening of peptide activity with traditional approaches is costly, time-consuming and labor-intensive. Hence, in silico methods, mainly machine learning approaches, for their accuracy and effectiveness, have been introduced to predict the peptide activity. In this review, we document the recent progress in machine learning-based prediction of peptides which will be of great benefit to the discovery of potential active AMPs, ACPs and AIPs.

Evaluating Qualitative Research

2017 ◽  
Author(s):  
Jeasik Cho
Keyword(s):  
Qualitative Research ◽  
Large Scale ◽  
Academic Research ◽  
Research Community ◽  
Assessment Tools ◽  
Journal Articles ◽  
Journal Editors ◽  
The Past ◽  
Grant Proposals

This book provides the qualitative research community with some insight on how to evaluate the quality of qualitative research. This topic has gained little attention during the past few decades. We, qualitative researchers, read journal articles, serve on masters’ and doctoral committees, and also make decisions on whether conference proposals, manuscripts, or large-scale grant proposals should be accepted or rejected. It is assumed that various perspectives or criteria, depending on various paradigms, theories, or fields of discipline, have been used in assessing the quality of qualitative research. Nonetheless, until now, no textbook has been specifically devoted to exploring theories, practices, and reflections associated with the evaluation of qualitative research. This book constructs a typology of evaluating qualitative research, examines actual information from websites and qualitative journal editors, and reflects on some challenges that are currently encountered by the qualitative research community. Many different kinds of journals’ review guidelines and available assessment tools are collected and analyzed. Consequently, core criteria that stand out among these evaluation tools are presented. Readers are invited to join the author to confidently proclaim: “Fortunately, there are commonly agreed, bold standards for evaluating the goodness of qualitative research in the academic research community. These standards are a part of what is generally called ‘scientific research.’ ”

scholarly journals Global climatology and trends in convective environments from ERA5 and rawinsonde data

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Mateusz Taszarek ◽  
John T. Allen ◽  
Mattia Marchio ◽  
Harold E. Brooks
Keyword(s):  
Large Scale ◽  
Climate Models ◽  
Global Climate ◽  
Convective Available Potential Energy ◽  
Global Climate Models ◽  
Convective Precipitation ◽  
The Past ◽  
The Tropics ◽  
Rawinsonde Data

AbstractGlobally, thunderstorms are responsible for a significant fraction of rainfall, and in the mid-latitudes often produce extreme weather, including large hail, tornadoes and damaging winds. Despite this importance, how the global frequency of thunderstorms and their accompanying hazards has changed over the past 4 decades remains unclear. Large-scale diagnostics applied to global climate models have suggested that the frequency of thunderstorms and their intensity is likely to increase in the future. Here, we show that according to ERA5 convective available potential energy (CAPE) and convective precipitation (CP) have decreased over the tropics and subtropics with simultaneous increases in 0–6 km wind shear (BS06). Conversely, rawinsonde observations paint a different picture across the mid-latitudes with increasing CAPE and significant decreases to BS06. Differing trends and disagreement between ERA5 and rawinsondes observed over some regions suggest that results should be interpreted with caution, especially for CAPE and CP across tropics where uncertainty is the highest and reliable long-term rawinsonde observations are missing.

scholarly journals The Relevance of Inequality Research in Sociology for Inequality Reduction

2021 ◽  
Vol 7 ◽  
pp. 237802312110201
Author(s):  
Thomas A. DiPrete ◽  
Brittany N. Fox-Williams
Keyword(s):  
Social Sciences ◽  
Social Policy ◽  
Social Inequality ◽  
Large Scale ◽  
Sociological Research ◽  
Life Chances ◽  
The Past ◽  
The Social ◽  
Large Scale Change ◽  
The Subject

Social inequality is a central topic of research in the social sciences. Decades of research have deepened our understanding of the characteristics and causes of social inequality. At the same time, social inequality has markedly increased during the past 40 years, and progress on reducing poverty and improving the life chances of Americans in the bottom half of the distribution has been frustratingly slow. How useful has sociological research been to the task of reducing inequality? The authors analyze the stance taken by sociological research on the subject of reducing inequality. They identify an imbalance in the literature between the discipline’s continual efforts to motivate the plausibility of large-scale change and its lesser efforts to identify feasible strategies of change either through social policy or by enhancing individual and local agency with the potential to cumulate into meaningful progress on inequality reduction.

scholarly journals A Survey on Edge Performance Benchmarking

2021 ◽  
Vol 54 (3) ◽  
pp. 1-33
Author(s):  
Blesson Varghese ◽  
Nan Wang ◽  
David Bermbach ◽  
Cheol-Ho Hong ◽  
Eyal De Lara ◽  
...  
Keyword(s):  
Large Scale ◽  
Future Internet ◽  
Coupled Systems ◽  
Operational Conditions ◽  
Loosely Coupled ◽  
Performance Benchmarking ◽  
The Past ◽  
Geographically Dispersed ◽  
Tightly Coupled ◽  
History Of

Edge computing is the next Internet frontier that will leverage computing resources located near users, sensors, and data stores to provide more responsive services. Therefore, it is envisioned that a large-scale, geographically dispersed, and resource-rich distributed system will emerge and play a key role in the future Internet. However, given the loosely coupled nature of such complex systems, their operational conditions are expected to change significantly over time. In this context, the performance characteristics of such systems will need to be captured rapidly, which is referred to as performance benchmarking, for application deployment, resource orchestration, and adaptive decision-making. Edge performance benchmarking is a nascent research avenue that has started gaining momentum over the past five years. This article first reviews articles published over the past three decades to trace the history of performance benchmarking from tightly coupled to loosely coupled systems. It then systematically classifies previous research to identify the system under test, techniques analyzed, and benchmark runtime in edge performance benchmarking.

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