bluuebunny/crossref_metadata_2025 huggingface dataset:
The Impact of the Mode of Data Representation for the Result Quality of the Detection and Filtering of Spam
Authors: Hamou Reda Mohamed , Amine Abdelmalek
Published: November 2013

Spam is now seized of the Internet in phenomenal proportions since it high represents a percentage of total emails exchanged on the Internet. In the fight against spam, the authors are interested in this article to develop a hybrid algorithm based primarily on the probabilistic model in this case Naïve Bayes for weighting the terms of the matrix term -category and second place used an algorithm of unsupervised learning (K-means) to filter two classes namely spam and ham. To determine the sensitive parameters that improve the classifications the authors are interested in studying the content of the messages by using a representation of messages by the n-gram words and characters independent of languages (because a message may be received in any language) to later decide what representation opt to get a good classification. The authors have chosen several metrics evaluation to validate their results.
Knowledge Discovery in Higher Educational Big Dataset
Authors: Saadatdoost Robab , Sim Alex Tze Hiang , Hee Jee Mei , Jafarkarimi Hosein
Published: November 2013

This paper seeks to address one of the current issues of large organizations; it is rapid growth of data without any quick way to extract worthwhile and hidden knowledge from considerable huge volume of data. It seems that management of higher education institutes interest to the best method for solving this problem and making a good decisions and strategies. Contrast to the authors’ initial sample consisted of five medical universities of Tehran, in this paper a large sample was chosen because of the expected valuable discovered knowledge. This data was collected from 65 universities of Iran based 18 years. The data is in Persian. The present paper confirms the authors’ previous findings and contributes additional discovered knowledge related to the major group of program with different geographical, the main factor of sharp increase in the number of students and preferred learning style, study mode and programs and considerable growth of female students after 1996. The findings of this study have a number of important implications for future planning of higher education to improve ranking of universities. Another important practical implication is that other researchers can use them in their studies on higher education.
An Alarm System for Death Prediction
Authors: Brause Rüdiger , Hanisch Ernst
Published: November 2013

The clinical treatment of sepsis is one of most severe issues in hospitals. Unfortunately, until now it has not been possible to significantly reduce the mortality rate of severe forms of sepsis like septic shock, which is as high as 50-60% worldwide. Often, the diagnosis and awareness for possible implications of sepsis can be facilitated by an automated online diagnosis. This contribution reports the development of a monitoring alarm system for the individual prediction of death based on the data of 382 patients with septic shock. The paper discusses the pros and cons of such a prediction system used in a medical environment, its principal usage issues and implementation.
An mHealth System for Monitoring of Children with Suspected Cardiac Arrhythmias
Authors: Kyriacou E. , Hoplaros D. , Chimonidou P. , Matheou G. , Millis M. , Kounoudes A. , Jossif A. , Pattichis C.
Published: November 2013

Arrhythmia is one of the most difficult problems in cardiology and especially in pediatric cardiology. In this study, the authors present a mobile health (m-health) system that can be used for continuous monitoring of children (ages 0-16 years) with suspected cardiac arrhythmias. The system is able to carry-out real-time acquisition and transmission of ECG signals, and facilitate an alarm scheme able to identify possible arrhythmias so as to notify the on-call doctor and the relatives of the child that an event or something that denotes malfunction is happening. In general the problem has been divided into two cases. The first case is called “in-house case”, where the subject is located in his/her house. While the second case is called “moving-patient case”, where the subject might be located anywhere else. The authors’ goal is the continuous 24 hours, monitoring of the child. During the “in house case”, a sensor network installed in the child’s house is used in order to continuously record ECG signals from the patient as well as environmental parameters. The second case is more general. For this case, the child is monitored using the same ECG recording device but the signals are transmitted, through a mobile device, directly to the central monitoring system. The transmission is performed through the use of 2.5G, or 3G, mobile communication networks. The system design, development and technical tests (using an ECG simulator and 20 volunteers) are reported in this paper. The future steps will be the further evaluation of the system on children with suspected cardiac arrhythmias.
Wireless Networking Credibility, Device Interoperability and Other Important Issues to Take into Consideration for the Deployment of a Homecare Service Provision Model
Authors: Perakis Konstantinos , Giokas Kostas , Iliopoulou Dimitra , Koutsouris Dimitris
Published: November 2013

The proposed article aims to provide a discussion on the issue of the utilization of wireless technologies, for the deployment of monitoring wireless personal area sensor networks for the unobtrusive monitoring of patients, aiming to answer some of the fundamental questions raised by this, including which is the most appropriate technology for such a networking architecture, what is the best topology for home monitoring wireless sensor network solutions, and what is the performance of the wireless networking technologies. In addition, it aims to initiate some brainstorming as regards how many interoperability protocols are actually need, presenting the strong and weak points of most of the current interoperability standards utilized in the field of homecare, with emphasis on the encoding and formatting of ECG waveforms. Last but not least it aims to pinpoint other important issues in the field of homecare, such as legal and safety issues which are worth of consideration.
An Exploration about Krashen's Input Hypothesis in the Computer Network Environment
Authors: Junyuan Cui
Published: November 2013

Krashen’s second language acquisition theory is the most influential theory in foreign or second language learning. The input hypothesis is an essential hypothesis in his theory. The research and debate on input hypothesis never ends. This paper tries to explore the input hypothesis in the computer network environment. It detects computer and network technology can be applied to further explain the input hypothesis. The computer and internet have the function of assisting acquisition, providing enough comprehensible input and improving production ability. This discovery has further implication on improving the English learning in non-English speaking countries. Computer Assisted Language Learning has new demands on both national education investment and college education management; on both teachers and students.
Toward A Generic Infrastructure for Ubiquitous Computing
Authors: Khalfi Mohammed Fethi , Benslimane Sidi Mohamed
Published: November 2013

The recent technological overhangs have focused on the democratization of wireless networks and the miniaturization of communication devices. In this context, Ubiquitous Computing is a recent paradigm whose objective is to allow users to access data, and make information available anywhere and at any time. In other terms, Pervasive Information Systems (PIS) constitute an emerging class of Information Systems where Information Technology is gradually embedded in the physical environment, capable of accommodating user needs and wants when desired. PIS differ from Desktop Information Systems (DIS) in that they encompass a complex, dynamic environment composed of multiple artifacts instead of Personal Computers only, capable of perceiving contextual information instead of simple user input, and supporting mobility instead of stationary services. In this paper, as an initial step, the authors present PIS novel characteristics compared to traditional desktop information systems; the authors explore this domain by offering a list of challenges and concepts of ubiquitous computing that form the core elements of a pervasive environment. As a result of this work, a generic architecture for intelligent environment has been created. Based on various and related works concerning models and designs. This framework can be used to design any PIS instance.
Privacy in the 21st Century
Authors: Kitsos Panagiotis , Yannoukakou Aikaterini
Published: November 2013

The events of 9/11 along with the bombarding in Madrid and London forced governments to resort to new structures of privacy safeguarding and electronic surveillance under the common denominator of terrorism and transnational crime fighting. Legislation as US PATRIOT Act and EU Data Retention Directive altered fundamentally the collection, processing and sharing methods of personal data, while it granted increased powers to police and law enforcement authorities concerning their jurisdiction in obtaining and processing personal information to an excessive degree. As an aftermath of the resulted opacity and the public outcry, a shift is recorded during the last years towards a more open governance by the implementation of open data and cloud computing practices in order to enhance transparency and accountability from the side of governments, restore the trust between the State and the citizens, and amplify the citizens' participation to the decision-making procedures. However, privacy and personal data protection are major issues in all occasions and, thus, must be safeguarded without sacrificing national security and public interest on one hand, but without crossing the thin line between protection and infringement on the other. Where this delicate balance stands, is the focal point of this paper trying to demonstrate that it is better to be cautious with open practices than hostage of clandestine practices.
The Gaza Strip as Panopticon and Panspectron
Authors: Dahan Michael
Published: November 2013

This paper explores the different yet complementary aspects of the panopticon and the panspectron using the case study of the Israeli controlled Palestinian territory, the Gaza Strip. Beginning with a brief theoretical discussion of the concept of panopticon and panspectron expanding on the existing literature, the paper moves on to discuss the implementation of panoptical and panspectral technologies and practices in the Gaza Strip and situates these within a larger framework of control of the Palestinian population under Israeli occupation, and discusses seepage of these surveillance technologies into Israeli society proper and beyond into the international arena.
Overcoming the Barriers to Accessing Government Online Services in Australia
Authors: Mohammad Mohammad , Lan Yi-Chen
Published: November 2013

Australia has an inherent desire to afford migrants with a wide range of opportunities, so it naturally follows that government online services should also be available to migrants with a non-English speaking background (NESB). Despite the admirable efforts of governments and local agencies in Australia to provide such services, the reality is that many NESB migrants are not taking advantage of these available services. This case study investigates possible reasons for this issue, as well as suggestions for improvement. In addition, this study, involving interviews with 30 selected Arab residents, identifies language and low computer skills as among the primary reasons why many NESB migrants are discouraged from using government online services in Australia. The results of this case study, in combination with the extensive literature on the topic, show that Australia should implement ICT-based or e-government policies, programs, and services that more accurately reflect migrant cultures and languages so that migrant integration can be more fully accomplished. Specifically, this article presents a NESB model that adopts the value of user-centricity or a more individual-focused approach to government online services in Australia.
Relations among Actors in Governmental Projects
Authors: Lanza Beatriz Barreto Brasileiro , Cunha Maria Alexandra
Published: November 2013

This paper aims to study an eleven-year project of Mobile Government (mGov) in the state of Paraná, Brazil. The precocious experience in Brazil in mGov and the number of cell phones used in the country are not arguments for these to be used in providing mass public services. Mason’s Historical Method was used to get to know the project, raising available information and retrieving happenings and results. To identify events, relevant actors, their roles, aspects in collaboration, setting and density of the relations among these actors, Social Network Analysis was used. The authors conclude it is important to formalize the project, but that will not guarantee its continuity in the long run. Characterizing phases minimizes the importance given to the change of governors after new elections in large corporative projects. The networks forming favors the dissemination of IT knowledge among actors.
Determinants of Mobile Service Acceptance in Saudi Arabia
Authors: Alotaibi Mutlaq B.
Published: November 2013

This paper identifies factors that determine user acceptance of the mobile version of the stock exchange system in Saudi Arabia (Tadawul). It examines the conditions under which users use Mobile Tadawul (M-Tadawul), the findings will provide an in-depth understanding of the mobile financial services for developers, potential users and Information Technology (IT) managers. The study proposed a theoretical framework based on the Unified Theory of Acceptance and Use of Technology (UTAUT) model. To meet the aims of this study, the model utilized the major UTAUT constructs, these were moderated by three factors: age, gender and education. M-Tadawul characteristics were included as a major determinant of acceptance and use. A questionnaire was devised (and sent to 442 Saudis) to measure M-Tadawul acceptance and use facilitators. The results suggest that behavioural intentions towards the use of M-Tadawul can be predicted by performance expectancy, effort expectancy, social influence and M-Tadawul characteristics. The findings also indicate that the effect of predicting variables is mediated by gender, age and education. Studying the moderating effect of education in developing countries as well as applying heuristics evaluation of mobile services in Saudi Arabia would therefore merit further investigation.
Building a User Centric Success Factors Model for Mobile Government
Authors: Sultan Al-masaeed  , Love Steve
Published: November 2013

Mobile government is an emergent phenomenon that represents a solution for many countries to reach their citizens and improve delivery of government-to- citizens’ services (G2C). Despite the fact that mobile government benefits are very promising; there are some factors that determine success or failure of mobile government applications. In this study, a systematic review of previous studies using a meta-analysis method was undertaken and a conceptual success factors model for mobile government to citizen services (G2C) was created. Furthermore, the second phase of this study was a survey with 40 academics to validate the use of meta-analysis and validate and refine the conceptual model.
Games for Health
Authors: Litinski Veronika
Published: November 2013

How to reduce cost, improve quality, and improve customer engagement are top of mind for healthcare leaders. Healthcare organizations are developing and testing comprehensive engagement strategies to support consumers across the care continuum. In this environment some form of priority setting must occur, and it requires establishing connections between proposed innovation to a process of care and the outcomes. Digital tools offer a promise of meaningful measures that are affordable, embedded in the care delivery system and truly reflect patients’ experiences through the patient journey. This paper proposes a pragmatic path for building a business case for innovative digital health tools in community care settings. It overlays value model for healthcare IT investments with patient activation measures and innovation management techniques. It proposes that the intersection of system-generated measures and psychometric methods for data collection and analysis may lead to development of feasible patient engagement measures for healthcare.
A Community-Based Participatory Research Model and Web Application for Studying Health Professional Shortage Areas in the United States
Authors: Zhang Sonya , Dorn Bradley
Published: November 2013

Health Professional Shortage Areas (HPSA) are still associated with “worse general health status and poor physical health” (Jiexin, 2007) in the United States today. Meanwhile, limitations still exist in HPSA studies for multiple reasons, including limited data resources and availability, lack of efficient way to share and collaborate, and lack of community participation and public awareness. To overcome these limitations, we proposed a Community-Based Participatory Research (CBPR) approach for HPSA studies that allows researchers to share and collaborate on HPSA related data, and allows the general public to learn about HPSA and participate in survey and discussions that help supplement researchers’ data. Through CBPR, effective and location-appropriate research, planning, and awareness can be achieved (O'Fallon & Dearry, 2002). We then described a Web application, which was designed based on our CBPR model, through the use of Google Fusion Table and Geocoding.
Electronic Medical Records and Public Perceptions
Authors: Abdel-Monem Tarik , Herian Mitchel N. , Shank Nancy
Published: November 2013

Public attitudes about electronic medical records (EMRs) have been primarily gauged by one-time opinion polls. The authors investigated the impact of an interactive deliberative polling process on general attitudes towards EMRs and perceptions of governmental roles in the area. An initial online survey was conducted about EMRs among a sample of respondents (n = 138), and then surveyed a sub-sample after they had engaged in a deliberative discussion about EMR issues with peers and policymakers (n = 24). Significant changes in opinions about EMRs and governmental roles were found following the deliberative discussion. Overall support for EMRs increased significantly, although concerns about security and confidentiality remained. This indicates that one way to address concerns about EMRs is to provide opportunities for deliberation with policymakers. The policy and theoretical implications of these findings are briefly discussed within.
Automatic Topic Ontology Construction Using Semantic Relations from WordNet and Wikipedia
Authors: Subramaniyaswamy V.
Published: November 2013

Due to the explosive growth of web technology, a huge amount of information is available as web resources over the Internet. Therefore, in order to access the relevant content from the web resources effectively, considerable attention is paid on the semantic web for efficient knowledge sharing and interoperability. Topic ontology is a hierarchy of a set of topics that are interconnected using semantic relations, which is being increasingly used in the web mining techniques. Reviews of the past research reveal that semiautomatic ontology is not capable of handling high usage. This shortcoming prompted the authors to develop an automatic topic ontology construction process. However, in the past many attempts have been made by other researchers to utilize the automatic construction of ontology, which turned out to be challenging due to time, cost and maintenance. In this paper, the authors have proposed a corpus based novel approach to enrich the set of categories in the ODP by automatically identifying the concepts and their associated semantic relationship with corpus based external knowledge resources, such as Wikipedia and WordNet. This topic ontology construction approach relies on concept acquisition and semantic relation extraction. A Jena API framework has been developed to organize the set of extracted semantic concepts, while Protégé provides the platform to visualize the automatically constructed topic ontology. To evaluate the performance, web documents were classified using SVM classifier based on ODP and topic ontology. The topic ontology based classification produced better accuracy than ODP.
Effects of Vendor-Managed Inventory on the Bullwhip Effect
Authors: Hohmann Susanne , Zelewski Stephan
Published: November 2013

The bullwhip effect means that demand variability increases as one moves up the supply chain. In the following article the bullwhip effect is quantified for each part of the supply chain which is presupposed to consist of a producer, a wholesaler, a retailer, and a consumer. After considering the causes of the bullwhip effect, it will be shown with the help of a nonlinear optimization model to what extent the bullwhip effect can be reduced using vendor-managed inventory (VMI) as one concept of Collaborative Planning, Forecasting and Replenishment (CPFR). In contrast to other studies in this field the reduction of the bullwhip effect will be accurately quantified for each part of the supply chain.
Validation in Supply Chain Decision Support Systems
Authors: Tynjala Teemu
Published: November 2013

Decision Support Systems are used currently to support various high impact decisions in industry. This study explores the subcategory of DSSs related to Supply Chain Management. More precisely we explore the problem of integrating companies’ strategic supply chain decision support systems to financial reporting systems for the purpose of validation. The study is done through literature survey, and inductive case studies. The author finds that integration is challenging because systems are typically disjoint and capture data at different levels of granularity. The author conceptualizes the present problem and proposes a generic solution framework.
Empowering Creativity in Young People Through Mobile Learning
Authors: Ranieri M. , Bruni I.
Published: November 2013

This paper investigates the potential of mobile learning for creativity in and out of school with a focus on media production. In doing so it attempts to move beyond binary choices around the nature of creativity (e.g., individual vs social) and the role of technologies for creative learning. To this end, it presents the literature on how creativity has been conceptualized, especially in education, and provides the theoretical underpinnings that supported the study by referring to the Vygotskyan perspective of creativity as a transformative process of culture and the self. It then moves to a description of three experiences addressing young people and entailing the creation of digital artifacts through mobile devices. It also presents some results, exploring learners’ and teachers’ perspectives and showing how mobile devices serve as cultural resources that young people use for meaning making and transforming themselves. The paper concludes with some recommendations for future research.
Creativity and Mobile Language Learning Using LingoBee
Authors: Petersen Sobah Abbas , Procter-Legg Emma , Cacchione Annamaria
Published: November 2013

In this paper, the authors explore the ideas of mobility and creativity through the use of LingoBee, a mobile app for situated language learning. LingoBee is based on ideas from crowd-sourcing and social networking to support language learners. Learners are able to create their own content and share it with other learners through a repository. The authors have analysed the language content created by second language learners in several European countries to identify creativity in mobile language learning. Three perspectives of creativity could be found: creativity spurred by the situated context or what the authors call “LingoBee moments”, collaborative creative construction of content and creative use of language. Examples of each are presented and discussed. This work has been conducted within the EU LLP project SIMOLA, Situated Mobile Language Learning.
Supporting Creativity in Craft Brewing
Authors: Wright Steve , Short Ben , Parchoma Gale
Published: November 2013

This paper presents a case-study of an individual engaged in the practice of craft brewing and the ways in which his use of a mobile device has supported the informal learning underpinning his transition from novice towards mastery. Through participant observation, online ethnographic methods and interview data the authors present a description of how the mobile device is used. The authors argue for the importance of considering the role of constraint in the creative process, and the place of expert assessment in evaluating a product as creative. These arguments are contrasted with theorisation of assessment as absent in informal learning or inappropriate for evaluating creativity.
Spiking Statistics of Excitatory Neuron with Feedback
Authors: Vidybida Alexander , Kravchuk Kseniia
Published: November 2013

Firing statistics of excitatory binding neuron (BN) is considered. The neuron is driven externally by a Poisson stream. Influence of feedback, which conveys every output impulse to the input with time delay , on the statistics of output spikes is studied. The resulting output stream is not Poissonian, and the authors obtain its inter-spike intervals (ISI) distribution for the case of BN, BN with instantaneous, , and delayed, , feedback. Output statistics of neuron with delayed feedback differs essentially from that found for the case of no feedback as well as from the case of instantaneous feedback. ISI distributions, found for delayed feedback, are characterized with jumps, derivative discontinuities and include -function type singularity. Also, for non-zero refractory time, the authors obtain multiple-ISI conditional probability density and prove, that delayed feedback presence results in non-Markovian statistics of neuronal firing. It is concluded, that delayed feedback presence can radically change neuronal firing statistics.
Learning Transformations with Complex-Valued Neurocomputing
Authors: Nitta Tohru
Published: November 2013

The ability of the 1-n-1 complex-valued neural network to learn 2D affine transformations has been applied to the estimation of optical flows and the generation of fractal images. The complex-valued neural network has the adaptability and the generalization ability as inherent nature. This is the most different point between the ability of the 1-n-1 complex-valued neural network to learn 2D affine transformations and the standard techniques for 2D affine transformations such as the Fourier descriptor. It is important to clarify the properties of complex-valued neural networks in order to accelerate its practical applications more and more. In this paper, first, the generalization ability of the 1-n-1 complex-valued neural network which has learned complicated rotations on a 2D plane is examined experimentally and analytically. Next, the behavior of the 1-n-1 complex-valued neural network that has learned a transformation on the Steiner circles is demonstrated, and the relationship the values of the complex-valued weights after training and a linear transformation related to the Steiner circles is clarified via computer simulations. Furthermore, the relationship the weight values of the 1-n-1 complex-valued neural network learned 2D affine transformations and the learning patterns used is elucidated. These research results make it possible to solve complicated problems more simply and efficiently with 1-n-1 complex-valued neural networks. As a matter of fact, an application of the 1-n-1 type complex-valued neural network to an associative memory is presented.
Modeling and Methodology for Incorporating Existing Technologies to Produce Higher Probabilities of Detecting Suicide Bombers
Authors: Fox William P. , Binstock John , Minutas Mike
Published: November 2013

Among the many weapons currently used by terrorist organizations against public welfare and coalition forces, human-born Improvised Explosive Devices (IEDs) present a significant threat. Commonly referred to as suicide bombers, these individuals enter crowded public areas in order to detonate their IED, inflicting lethal damage to the surrounding individuals. Constructed of non-standard parts and hidden under layers of clothing, these human-born IEDs go undetected until detonated. Currently, there are no detection systems that can identify suicide bombers at adequate standoff distances. The authors developed models and a methodology that examine current technologies to increase the probability of identifying a suicide bomber at a checkpoint or marketplace with an adequate standoff distance. The proposed methodology employs sensor technology incorporating unique detection threshold values. The authors analyze our proposed methodology utilizing a simulation model that provides both the probability of detecting a bomber and the probability of a false detection. These simulations will allow us to determine the threshold values for each sensor that result in the best probability of detection of a suicide bomber and allows for a small probability of false detections. Using experimentally “good” threshold values, the authors were able to drastically increase the probability of detection with a combination of radar and thermal imagery. In this paper, the main sensor is the hand-held radar.
Docking Two Models of Insurgency Growth
Authors: Jaye Michael , Burks Robert
Published: November 2013

The use of agent-based simulations (ABS) in social science applications presents validation challenges. In this study, the authors use two theories for the growth of rebellion, one an ABS and the other implemented as a system of ordinary differential equations (ODEs). Epstein’s (2001) theory for the rise of rebellion serves as one conceptual model. The authors implement this theory in NetLogo, with several modifications. The second conceptual model likens the spread of an insurgency to that of an infectious disease, specifically the susceptible-infected-removed-susceptible (SIRS) model. The authors find that the similarity of the ODE model results to those obtained from certain parameters of the ABS implementation serves as a form of model validation. The term used for this type of validation is docking. In addition, other results obtained from the ABS – not directly attainable from the ODE model but which match observed phenomenon in socio-political systems – also demonstrates operational validity.
Behavior Selection Using Utility-Based Reinforcement Learning in Irregular Warfare Simulation Models
Authors: Papadopoulos Sotiris , Baez Francisco , Alt Jonathan , Darken Christian
Published: November 2013

The Theory of Planned Behavior (TPB) provides a conceptual model for use in assessing behavioral intentions of humans. Agent based social simulations seek to represent the behavior of individuals in societies in order to understand the impact of a variety of interventions on the population in a given area. Previous work has described the implementation of the TPB in agent based social simulation using Bayesian networks. This paper describes the implementation of the TPB using novel learning techniques related to reinforcement learning. This paper provides case study results from an agent based simulation for behavior related to commodity consumption. Initial results demonstrate behavior more closely related to observable human behavior. This work contributes to the body of knowledge on adaptive learning behavior in agent based simulations.
Age determinations and geological studies, part 1 - isotopic ages, report 5
Authors: Wanless R K , Stevens R D , Lachance G R , Rimsaite R Y H
Published: November 2013

Potassium-argon age determinations are reported for a total of 184 Canadian mineral and rock samples, listed according to their provincial and territorial distribution. Each sample is described, and a geological interpretation of its determined age is given. The
techniques employed are described in outline form, and the analytical precision obtained is discussed.
Submersible observations of the east coast of Canada
Authors: Piper D J W
Published: November 2013

In 1985, 65 dives of the submersible PISCES IV were made on geoscientific targets off the east coast of Canada. Dives were carried out principally to investigate sediment transport processes in fiords, on the continental shelf and on the continental slope and to
address other issues related to oil and gas development, such as hazards posed by iceberg scour and seismicity. This volume describes the results of the diving programs that have not been reported in full elsewhere.
Mineral Deposit Studies in Nova Scotia: Volume 1
Authors: Sangster A L
Published: November 2013

Carbonate and cale-silicate lithologies are a major component of late Precambrian to early Paleozoic metasedimentary rocks in Cape Breton Island. Metacarbonate rocks can be distinguished on a regional basis by lithological, metamorphic, geochemical, metallogenic,
and to limited extent, age criteria. ln central Cape Breton Island, thick sequences of calcite and dolomite marble and cale-silicate marble are interbedded with clastic metasedimentary rocks that have traditionally been included with the George River Group. Major compositional and metamorphic
variations are evi­dent in George River Group marble, especially between the low-grade, pure calcite and dolomite marble of the Creignish Hills-North Mountain area, and the higher grade, impure, siliceous, and predominantly dolomitic marble of the Boisdale Hills area. Major and trace element
patterns sug­gest that compositional variability between marble units within these two areas is controlled by variations in the clastic content of the carbonate rocks. Metallic mineralization, consisting of iron oxide, base metal sulphide, tungsten-, tin-, and precious metal-bearing minerais, is
predominantly skarn-associated and related to discrete contact metasomatic environments. Within the Cape Breton Highlands crystalline terrane, carbonate units within medium-grade paragneiss sequences, including the McMillan Flowage Formation, the Cape North Group and others, are of much more limited
distribution. Marble lithologies are richer in silica, alumina, and related major elements contributed by clastic impurities in the original depositional environment. The Cape Breton Highlands carbonate units are also enriched in copper and zinc but sulphide miner­alization is not common. Siliceous
dolomite marble and cale-silicate units, associated with high metamorphic grade mig­matite, represent another distinct class of metacarbonate rock in Cape Breton Island. The Lime Hill gneissic complex in central Cape Breton Island, and the Blair River Camplex in northwestern Cape Breton Island
appear to represent remnants of crystalline basement rocks which are aider than George River Group and other metasedimentary rocks of uncertain age in the Cape Breton Highlands. Marble units found at Lime Hill and within the Blair River Complex at Meat Cove, are hast to zinc deposits
metallogenically comparable ta carbonate-hosted zinc+ / - lead deposits of the Grenville Supergroup in the Canadian Shield.
Current research, part B, eastern and Atlantic Canada
Authors:   Geological Survey of Canada
Published: November 2013

The Upton stratabound barite deposit is hosted in carbonate rocks of the Upton group of the Cambro­Ordovician flyschoid belt of the Quebec Appalachians. lt contains approximately 950 000 tons grading 46.5% BaSO4, 1.9% Zn, 0.6% Pb, 0.15% Cu, O.ll
% Cd and 13.5 git Ag. The mineralization consists of blade-like crystals, rosettes,fine grained aggregates, nodules and veins of barite, and disseminations, aggregates, and veinlets of sphalerite, chalcopyrite, pyrite and galena in a brecciated, massive, grey, locally fossiliferous limestone of
probable Late Cambrian or early Ordovi­cian age. The mineralized limestone is interbedded with black calcareous shales, mafic volcanic rocks, mudstones, siltstones, and barren white limestones here named the Upton Croup. The Upton Croup is exposed as windows within the tectonically overlying
Cambrian Granby nappe. The Upton barite deposit may be the result of a submarine exhalative process contemporaneous to sedimentation or of an epigenetic process involving emplacement/replacement into a brecciated, porous limestone acquifer.
Central Slave Basement Complex, Northwest Territories: its autochthonous cover, décollement, and structural topology
Authors: Bleeker W , Ketchum J
Published: November 2013

A comprehensive and testable model is presented for basement/cover relationships in the south-central Slave Province. Basement rocks predating the Yellowknife Supergroup can be combined into a single basement block, the Central Slave Basement Complex. Its
structural topology is described and preliminary U-Pb data are presented for a ca. 3.4-3.2 Ga gneiss below the Courageous Lake greenstone belt. All presently known occurrences of a distinctive quartzite and banded iron-formation assemblage occur immediately above the complex and are included in a
new stratigraphic entity, the Central Slave Cover Group, which represents the autochthonous cover to the Central Slave Basement Complex. A regional décollement marks the contact of the basement complex and its cover with the overlying parautochthonous to allochthonous tholeiitic break-up
sequence. Mutually consistent lineation data and kinematic indicators, at five widely spaced localities, suggest significant northeast-to-southwest transport of the tholeiite sequence over the basement complex and its cover sequence.
Progress report: Precambrian geology, Angikuni Lake area, District of Keewatin, Northwest Territories
Authors: Aspler L B , Chiarenzelli J R , Powis K B , Cousens B L
Published: November 2013

Near Angikuni Lake, greenschist-grade remnants of ca. 2.68 Ga mafic to felsic volcanic, siliciclastic, and carbonate sequences were deposited in shallow water on transitional, if not continental, crust. Initial isotopic and geochemical data indicate that the
volcanics are mantle-derived tholeiites, consistent with back-arc basin deposition. Amphibolite-grade granitic to gabbroic gneiss complexes formed during ca. 2.61 Ga plutonism and structural disruption of the supracrustal rocks, and are not basement. To the east, a northeast-trending, near-vertical,
strike-lineated, dextral, mylonitic shear zone juxtaposes greenschist supracrustal rocks against amphibolite gneisses. It may be kinematically linked to a northwest-trending, shallowly north-dipping, dip-lineated, north-side-down shear zone to the southwest. Both shear zones and synkinematic
tholeiitic plutonic rocks represent a distributed Snowbird tectonic zone, likely formed in an intracontinental setting late in the evolution of the Ennadai-Rankin greenstone belt. Paleoproterozoic Dubawnt Supergroup outliers outcrop across the area and define two northeast-trending
sub-basins.
Field contributions to thematic studies related to the kaminak greenstone belt, Kivalliq region, Northwest Territories
Authors: Hanmer S , Rainbird R H , Sandeman H
A , Peterson T D , Ryan J J
Published: November 2013

It is not possible to discriminate between single and multiple cycle stratigraphic models for the Archean Kaminak Group on the basis of fieldwork alone. However, facies associations in volcano-sedimentary rocks suggest that parts of the belt formed in an
intra-arc depositional environment. In the Kaminak Group, regional deformation and metamorphism are Late Archean in age and have been influenced by the emplacement of major plutons. Most silicification and stratigraphically controlled carbonatization predates regional deformation. Some
carbonatization and most sericitization is structurally controlled. The Mackenzie Lake sediments (sensu lato) represent two sequences: a Kaminak Group basement, and a cover of younger quartz arenites and conglomerates (Mackenzie Lake sediments sensu stricto). The Paleoproterozoic Hurwitz Group sits
unconformably on a basement of Archean granitoids and Kaminak Group volcanic rocks. Paleoproterozoic reworking is confined to discontinuous chlorite alteration and quartz veining, with local cleavage, adjacent to the Hurwitz Group.
Some notes on the assemblage boundaries and internal structure of the Uchi-Confederation greenstone belt, northwestern Ontario
Authors: van Staal C R
Published: November 2013

The Uchi-Confederation greenstone belt, which spans at least 220 million years of Archean evolution (2960-2740 Ma), comprises three distinct lithotectonic assemblages: Balmer, Woman and Confederation, the amalgamation and orogenic history of which are not well
understood. All three assemblages have been affected by at least two distinct phases of ductile deformation (D1 and D2). F1 structures were at least in part overturned folds, because the younger, moderately to steeply plunging F2 structures are locally downward facing. Tight, regional folds defined
on the basis of younging reversals and trending (sub)parallel to the assemblage boundaries may be F1 structures. None of the assemblage boundaries, however, is characterized by a continuous D1 high-strain zone and no evidence for D1-related accretionary structures (e.g. thrusts) near the assemblage
boundaries has been found so far.
The Woman-Confederation assemblage boundary is characterized by a narrow, late syn- to post-D2 sinistral shear zone.
New observations on the French River alkaline syenite complex, Bigwood township, Ontario
Authors: Currie K L
Published: November 2013

The French River alkaline syenite complex comprises two lenses of nepheline-bearing gneiss and associated peralkaline syenite within migmatitic biotite granite gneiss of the Britt Domain of the Grenville Province. The southern lens forms a shallow synform of
biotite dominant gneiss about 4 km long and 800 m wide. The northern, amphibole-dominant lens forms part of the western limb of a synform. The equivalent horizon on the eastern limb is occupied by peralkaline amphibole syenite and garnet-pyroxene granulite, and the core of the synform is formed of
megacrystic granite. Neither lens exhibits relicts of igneous texture. Both are associated with peralkaline syenite and appear to be structurally disconformable with surrounding gneiss. These data suggest that much of the nepheline gneiss may have formed by sodium metasomatism along low-angle fault
planes with alkalies possibly derived from peralkaline syenite.
Data on the origin of the Kipawa syenite complex, northwestern Quebec
Authors: Currie K L
Published: November 2013

The Kipawa Syenite Complex forms a persistent, thin, folded layer within tectonized biotite-magnetite granite gneiss structurally overlain and underlain by metasedimentary rocks which in turn rest upon Archean plutonic rocks. Kataphorite+biotite (±aegirine)
syenite comprises about 5% of the complex. The rest consists of distinctive granoblastic textured quartz syenite and granite characterized by large porphyroblasts and pods of hastingsite. Amphibole and biotite commonly show replacement by magnetite with formation of red oxidation spots.
Observations suggest formation of the Kipawa Syenite Complex during amphibolite grade metamorphism by metasomatic fluids derived from a peralkaline igneous complex whose relics appear as lenses of nepheline syenite and as allochthonous blocks of igneous-textured aegirine melasyenite. This process
occurred during a late stage of the assembly of the Superior and Grenville provinces (ca. 995 Ma), more than 100 Ma after emplacement of the host gneisses, and 40 Ma after emplacement of the alkaline complex.
Geochemistry and petrogenesis of the Lapeyrère gabbronorite, south-central Grenville Province, Quebec
Authors: Nadeau L , Brouillette P , Bédard J
Published: November 2013

The Lapeyrère gabbronorite is the largest of a number of post-collisional, mid-crustal gabbroic intrusions in Grenvillian terrain of the Portneuf-Mauricie region. These intrusions contain no significant amount of anorthosite and are 60-70 Ma younger than the
much larger neighbouring Morin and Lac Saint-Jean anorthosite-mangerite-charnockite-granite complexes.
Whole-rock geochemistry shows unidirectional trends and large overlaps from þhornblende-free' gabbronorite to þpyroxene-free' hornblende-quartz-diorite and granodiorite, consistent with diversification from the same parent magma.
The flat distribution in heavy rare-earth elements and the low Ti/Y ratios of model liquids in equilibrium with the cumulate phases suggest extraction of gabbronorite parent magma from a shallow-mantle spinel-lherzolite reservoir, which contrasts with the deeper mantle-plume-related setting commonly
invoked for anorthosite-mangerite-charnockite-granite magmatism. Partial melting in upper mantle reservoirs is consistent with intrusion of the Lapeyrère gabbronorite at the initial stage of orogenic collapse, following convective thinning of the lithospheric mantle.
Logistics opportunity costs: A mining case study
Authors: Van Jaarsveld Leani , Heyns Gert J. , Kilbourn Peter J.
Published: November 2013

This study highlighted the importance of determining the impact that an ineffective mode of transport has on a firm’s transportation model and costs. The main focus of this study was to determine the logistics opportunity costs of using road transport within a mining firm. A case study approach was followed, as the investigation aimed to analyse a complex problem experienced by one company and present it in an easily understandable format. From the results of this study, it was apparent that the logistics opportunity costs associated with the mode of transport was substantial. This highlighted the need for firms to revise their choice of transport mode on a regular basis, as it has a major impact not only on their transportation costs, but also on their inventory holding and carbon emissions. The results also have implications for South Africa’s only freight railway, Transnet Freight Rail, which should not only focus on expanding its existing capacity, but also on improving its customer service delivery whilst containing tariff increases.
The present is a thing of the past: Possible linguistic motivations for the ‘present tense writing tradition’ in Afrikaans prose
Authors: Breed Adri
Published: November 2013

There exists a long-standing tradition in Afrikaans creative writing to present narrative prose in the present tense, and not in the simple past as in English and Dutch. It is, however, difficult to prove the existence of such a tradition or to conduct a literature survey in order to determine the reasons for the origin and perpetuation of this tradition. This article firstly demonstrates from a creative writing perspective that the ‘present tense writing tradition’ does exist in Afrikaans. Secondly, two possible motivations for this tradition are proposed from a linguistic perspective. The goal of this article is not to question the validity of this tradition, but rather to open a discussion on the legitimacy of the tradition, as well as the implication it has for the writing, reading and interpretation of Afrikaans literary works.