Miracle-dz/UniFAR-FTUs huggingface dataset:
Effectiveness of Some Instructional Media for Teaching Organic Chemistry: In the Case of Second Year Chemistry Students of Arba Minch University, Ethiopia

Many students have difficulty learning symbolic and molecular representations of chemistry. This action research investigated how students develop an understanding of chemical representations with the aid of a visualizing tool that allowed them to build molecular models and view multiple representations simultaneously. Multiple sources of data were collected with the participation of 30 randomly selected 2nd year Chemistry students and two subject teachers in Arba Minch University (AMU) over 2-weeks period. The results of preand posttest showed that students' understanding of chemical representations improved substantially. The analysis of their interviews based on oral questions revealed that ball and stick model helped students to construct models and translate chemical compounds representations. Students who were highly engaged in discussions while using model made referential linkages between visual and conceptual aspects of representations. This in turn may have deepened their understanding of chemical representations and concepts. The findings also suggest that models can serve as a vehicle for students to generate mental images. Finally, students demonstrated their preferences of certain types of representation.
Motorcycle Safety Research Project Interim Summary Report 3 : Training and Licensing Interventions for Risk Taking and Hazard Perception for Motorcyclists

Motorcycle trauma is a serious road safety issue in Queensland and throughout Australia. In 2009, Queensland Transport (later Transport and Main Roads or TMR) appointed CARRS-Q to provide a three-year program of Road Safety Research Services for Motorcycle Rider Safety. Funding for this research originated from the Motor Accident Insurance Commission. This program of research was undertaken to produce knowledge to assist TMR to improve motorcycle safety by further strengthening the licensing and training system to make learner riders safer by developing a pre-learner package (Deliverable 1), and by evaluating the QRide CAP program to ensure that it is maximally effective and contributes to the best possible training for new riders (Deliverable 2). The focus of this report is Deliverable 3 of the overall program of research. It identifies potential new licensing components that will reduce the incidence of risky riding and improve higher-order cognitive skills in new riders.
Techniques to Improve Write and Retention Reliability of STT-MRAM Memory Subsystem

Spin transfer torque magneto-resistive random-access memory (STT-MRAM) has many advantages, such as scalability, persistence, practically infinite endurance, and fast access speed, that make it a promising and emerging technology for memory. However, this technology has multiple reliability issues, such as read and write reliability, higher write power, and long write latency, etc. At elevated temperatures, these issues exacerbate further. As the temperature increases massively in the latest compute nodes, we need to study and understand the effect of temperature on STT-MRAM memory writes and reliability. In this article, we propose the temperature-aware memory controller (MC) and device architecture techniques specific to STT-MRAM technology, which can improve write reliability, retention reliability, and memory power without sacrificing the performance. Our simulation results show that the proposed techniques cumulatively improve the write bit error rate (BER) on an average by $603\times $ , increase retention reliability by 65%, along with 27% power reduction and 5.8% improved system performance over the baseline STT-MRAM-based memory subsystem.
A Strategic Assessment of PLA Theatre Missile and ASAT Capabilities

China’s intermediate range ballistic and cruise missile forces have increased in capability over the past decade and are now starting to pose a considerable conventional strategic risk to nations within South East, South and West Asia as well as Russia. The DF-11 and DF-15 missiles no longer required opposite Taiwan could be deployed to threaten India and the countries bordering the South China Sea. The intended OTH-B radar network provides a tripwire early warning capability against aircraft and provides initial targeting of United States carrier battle groups, with potential capability against incoming ballistic and cruise missiles. The ongoing growth in targeting capabilities is of special concern to the United States, as is China’s continued development and deployment of new ballistic and cruise missile systems, as its regional neighbours embark upon an arms race, equipping their forces with both offensive and defensive systems to counter China’s growth in strategic weapons.
The Mobile Asteroid Surface Scout (MASCOT) - System & Mission Engineering and Surface Operations Concept

The Mobile Asteroid Surface Scout (MASCOT) is currently under development as a DLR contribution to the Japanese Hayabusa 2 mission, a sample return mission to the C-type near-Earth asteroid 1999JU3. MASCOT is a small about the size of a shoe box deployable package with a total mass of 10 kg. It enhances the missions scientific return by providing ground truth information from different surface sites by relocating itself with a hopping mechanism. It is, thus, complementing the sample return mission. MASCOT will also accomplish stand-alone science which can only be provided by a surface element and will serve as reconnaissance and scouting vehicle. Challenges to the design of a small-body landing package are the geo-technical properties of these bodies, which are a priori basically unknown. The shape and rotational state is assumed to be irregular, resulting in a complex gravity field, whereas the surface properties could even differ largely across the surface of one asteroid. The marginal knowledge of the environmental conditions affects mainly the mobility capabilities and guidance control performance. To fulfill its mission objectives while satisfying the tight mass and volume budget constraints in view of a highly uncertain environment, MASCOT is designed as a highly integrated small landing package with some degree of autonomous robotic operations capability on the asteroid surface. This paper introduces the system design as well as the payload suite of MASCOT and then focuses on mission design aspects and the surface operational concept. Hereby, the interaction of the mobility subsystem, the attitude motion determination sensors and the payload, coordinated by MASCOT's onboard decision making entity, is discussed. An outlook to functional endto-end simulation and testing is given.
CFD Simulation of Airflow in Ventilated Wall System Report #9

The objective of this report was to examine air movements in vinyl and brick ventilation cavities in detail, using a state of the art CFD commercial modeling tool. The CFD activity was planned to proceed the other activities in order to develop insight on the important magnitudes of scales occurring during ventilation air flow. This information generated by the CFD model was to be used to modify (if necessary) and to validate the air flow dynamics already imbedded in the hygrothermal model for the computer-based air flow simulation procedures. A comprehensive program of advanced, state-of-the-art hygrothermal modeling was then envisaged mainly to extend the knowledge to other wall systems and at least six representative climatic areas. These data were then to be used to provide the basis for the development of design guidelines. CFD results provided timely and much needed answers to many of the concerns and questions related to ventilation flows due to thermal buoyancy and wind-driven flow scenarios. The relative strength between these two mechanisms. Simple correlations were developed and are presented in the report providing the overall pressure drop, and flow through various cavities under different exterior solar and temperature scenarios. Brick Rainscreen Wall: It was initially expected that a 50 mm cavity would offer reduced pressure drops and increased air flow compared to a 19 mm cavity. However, these models showed that the size of the ventilation slots through the wall are the limiting factor rather than the cavity depth. Of course, once the slots are enlarged beyond a certain point, this could change. The effects of natural convection within the air cavities, driven by the temperature difference across the cavity, were shown to be less important than the external wind speed (for a wind direction normal to the wall surface), when wind action is present. Vinyl Rainscreen Wall: The CFD model of the vinyl rainscreen wall was simpler than that for the brick wall. Constant wall temperatures were used rather than conjugate heat transfer. Although this is appropriate for a thin surface with little heat capacity, it does mean that an empirical correlation between solar radiation (and perhaps wind speed) and vinyl temperature is required to use these results appropriately. The results developed from this CFD model were correlated to weather parameters and construction details so that they can be incorporated into ORNL s advanced hygrothermal models MOISTURE- EXPERT.
El estudio de las organizaciones: (la jungla dominada)

In this article Zulima Fernandez makes a quick review of the current state of knowledge on organizational design from both the theoretical and applied stadpoint. It is a matter that has become topical again as a result of the impact of the latest trends in business administration, such as the resource-based approach and know-how management. The topically of the subject goes hand in hand with the headway that it has made thanks to the contributions of the economy of organizations and organization theory, offering descriptive guidance in some cases, but mandatory in others.The study is arranged in two parts.The first is given over to reviewing the main theories and approaches devoted to the study of organizations, which allows us to bear witness to the growing fragmentation of studies which, as they gain in stringency and depth, decline in methodology, concepts and key variables. In the second part, we present some of the main ideas on the design of organizational structures, both primary and operational. It is a case, therefore, of providing a body of knowledge that is applied, but draws directly on the approaches presented in the preceding section, in order to put forward points of approximation between theory and practice.
Linking Training Evaluation to Training Needs Assessment: A Conceptual Model. Final Technical Paper for Period April 1989-August 1990.

Abstract : A critical linkage in training systems is the translation of training evaluation information for reassessing training needs and for making training program changes. This paper presents the development of a conceptual framework for examining the job relevancy and efficiency of training and the linkage of this evaluative information to training needs reassessment. How to integrate job performance information into the existing training evaluation system for identifying over- and under- trained tasks is also described. The Aerospace Ground Equipment (AGE) (AFS 423X5) Technical Training Program is used as a case analysis for this paper. Recommendations for future research to identify the content domain of an Airman Basic-in-Resident (ABR) Training program and to integrate performance information into the evaluation system are presented. (kr)
Feasibility of Using GPS to Track Bicycle Lane Positioning

Researchers have shown that Global Positioning System (GPS) units in smartphones can be used to identify routes taken by cyclists, including whether cyclists deviate from shortest paths to use bike lanes and other facilities. Researchers previously have not reported whether GPS tracking can be used to monitor whether and how bicyclists actually use lanes on streets, where these lanes have been provided, or other types of facilities. The objective of this research was to determine whether smartphone GPS units or enhanced GPS units could be used to track and map the location of cyclists on streets. The research team modified an open-source smartphone application (CycleTracks) to integrate with a higher-quality external GPS unit. Cyclists then mounted the smartphone with route-tracking applications to bicycles and repeatedly rode four different routes. The routes for the field tests were chosen because each included a striped lane for bicycle traffic and because the routes bisected a variety of built urban environments, ranging from an open location on a bridge over the Mississippi River to a narrow urban street lined by tall, multi-story office buildings. The field tests demonstrated that neither the smartphone GPS units nor the higher-quality external GPS receiver generate data accurate enough to monitor bicyclists’ use of bike lanes or other facilities. This lack of accuracy means that researchers interested in obtaining data about the propensity of cyclists to ride in lanes, when available, must rely on other technologies to obtain data for analyses.
Incidence of neutropenia induced by chemotherapy in the treatment of colorectal cancer

Objective: to analyze the incidence of neutropenia in patients with colorectal cancer, undergoing chemotherapy treatment. Methods: integrative review performed in the following databases: National Library of Medicine, National Institutes of Health, Cumulative Index to Nursing and Allied Health Literature, Latin American literature and Caribbean Center in Health Sciences, and SciVerse Scopus. Results: 499 articles were identified, of which 15 met the criteria for inclusion, published between 2006 and 2016 and analyzed in their entirety. Neutropenia was the most reported hematologic toxicity in 12 (80.0%) studies, and the second most common in three (20.0%), in varying degrees, being responsible for reducing and/or delaying of doses in six (40.0%) studies. Conclusion: the studies included in this review showed that neutropenia in patients with colorectal cancer in chemotherapy treatment have low incidences in different degrees, despite the significantly high rates of neutropenia associations, as the most common adverse event in the various analyzed regimes.
ViSiElse: An innovative visualization R package to ensure behavioral raw data reliability and transparency

Background. In recent years, the scientific community encouraged the use of raw data graphs to improve the reliability and transparency of the results presented in papers. However, methods to visualize raw data are limited to one variable per graph and/or only small samples. In behavioral science as in many other fields, multiple variables need to be plotted together to allow insights of the behavior or the process observations. In this paper, we present ViSiElse, an R-package offering a new approach in raw data visualization. Methods. ViSiElse was developed with the open-source software R to provide a solution for the complete visualization of the raw time data. Results. ViSiElse grants a global overview of a process by combining the visualization of multiple actions timestamps for all participants in a single graph. Individuals and/or group behavior can easily be assessed. Supplementary features allow users to further inspect their data by adding statistical indicators and/or time constraints. ViSiElse provides a global visualization of actions acquired from timestamps in any quantifiable observations.
Corl8: A system for analyzing diagnostic measures in wireless sensor networks

Due to an increasing demand to monitor the physical world, researchers are deploying wireless sensor networks more than ever before. These networks comprise a large number of sensors integrated with small, low-power wireless transceivers used to transmit data to a central processing and storage location. These devices are often deployed in harsh, volatile locations, which increases their failure rate and decreases the rate at which packets can be successfully transmitted. Existing sensor debugging tools, such as Sympathy and EmStar, rely on add-in network protocols to report status information, and to collectively diagnose network problems. Some protocols rely on a central node to initiate the diagnosis sequence. These methods can congest network channels and consume scarce resources, including battery power. In this thesis, we present Corl8, a system for analyzing diagnostic traces in wireless sensor networks. Our method relies on diagnostic data that is periodically transmitted to a network sink as a part of the standard sensor payload to enable fault diagnosis. Corl8 does not require any specific data to be present in the system, making it flexible. Our system provides an interactive environment for exploring correlated changes across different diagnostic measures within an individual node. It also supports processing on a batch level to automatically flag interesting correlations. The system’s flexibility makes it applicable for use in any wireless sensor network that transmits diagnostic measures. The analysis methods are user-configurable, but we suggest settings and analyze their performance. For our evaluation, we use data from five real-world deployments from the Intelligent River R © project consisting of 36 sensor nodes.
Disease characteristics and treatment patterns of Chinese patients with colorectal cancer: a retrospective study using medical records from China

Background: Colorectal cancer (CRC) is the third most prevalent cancer in China but few large-scale studies were conducted to understand CRC patients. The current study is aimed to gain a real-world perspectives of CRC patients in China. Methods: Using electronic medical records of sampled patients between 2011 and 2016 from 12 hospitals in China, a retrospective cohort study was conducted to describe demographics and disease prognosis of CRC patients, and examine treatment sequences among metastatic CRC (mCRC) patients. Descriptive, comparative and survival analyses were conducted. Results: Among mCRC patients (3,878/8,136, 48%), the fluorouracil, leucovorin, and oxaliplatin (FOLFOX) and other oxaliplatin-based regimens were the most widely-used first-line treatment (42%). Fluorouracil, leucovorin, irinotecan (FOLFIRI) and other irinotecan-based regimens dominated the second-line (40%). There was no a dominated regimen for the third-line. The proportion of patients receiving chemotherapy with targeted biologics increased from less than 20% for the first- and second- lines to 34% for the third-line (p<0.001). The most common sequence from first- to second-line was from FOLFOX and other oxaliplatin-based regimens to FOLFIRI and other irinotecan-based regimens (286/1,200, 24%). Conclusions: Our findings reflected a lack of consensus on the choice of third-line therapy and limited available options in China. It is evident o continue promoting early CRC diagnosis and to increase the accessibility of treatment options for mCRC patients. As the only nationwide large-scale study among CRC and mCRC patients before more biologics became available in China, our results can also be used as the baseline to assess treatment pattern changes before and after more third-line treatment were approved and covered into the National Health Insurance Plan in between 2017 - 2018.
Open source innovation in physical products : advantages and disadvantages, a corporate perspective

A better understanding of Open Source Innovation in Physical Product (OSIP) might allow project managers to mitigate risks associated with this innovation model and process, while developing the right strategies to maximise OSIP outputs. In the software industry, firms have been highly successful using Open Source Innovation (OSI) strategies. However, OSI in the physical world has not been studied leading to the research question: What advantages and disadvantages do organisations incur from using OSI in physical products? An exploratory research methodology supported by thirteen semi-structured interviews helped us build a seven-theme framework to categorise advantages and disadvantages elements linked with the use of OSIP. In addition, factors impacting advantage and disadvantage elements for firms using OSIP were identified as: „h Degree of openness in OSIP projects; „h Time of release of OSIP in the public domain; „h Use of Open Source Innovation in Software (OSIS) in conjunction with OSIP; „h Project management elements (Project oversight, scope and modularity); „h Firms. Corporate Social Responsibility (CSR) values; „h Value of the OSIP project to the community. This thesis makes a contribution to the body of innovation theory by identifying advantages and disadvantages elements of OSIP. Then, from a contingency perspective it identifies factors which enhance or decrease advantages, or mitigate/ or increase disadvantages of OSIP. In the end, the research clarifies the understanding of OSI by clearly setting OSIP apart from OSIS. The main practical contribution of this paper is to provide manager with a framework to better understand OSIP as well as providing a model, which identifies contingency factors increasing advantage and decreasing disadvantage. Overall, the research allows managers to make informed decisions about when they can use OSIP and how they can develop strategies to make OSIP a viable proposition. In addition, this paper demonstrates that advantages identified in OSIS cannot all be transferred to OSIP, thus OSIP decisions should not be based upon OSIS knowledge.
Advanced Range Technologies

Historically, the majority of the total life cycle cost for any complex system is attributed to operational and support activities. Therefore, a primary strategy for reducing life cycle costs should be to develop and infuse spaceport technologies in future space transportation systems. Advanced technologies will benefit current and future spaceports on the earth, moon, Mars, and beyond
Electromagnetics Explained: A Handbook for Wireless/ RF, EMC, and High-Speed Electronics

From the Publisher: Provides a comprehensive and practical understanding of electromagnetic fields and the principles necessary for circuit design at RF Especially helpful as a resource for digital engineers who want to strengthen their understanding of high-speed digital design issues: transmission lines, cross-talk, signal-integrity, and high-frequency layout. Written for engineers by an engineer, Electromagnetics Explained will teach you everything you need to know about RF/high-speed design and electromagnetic fields. Learn hands-on, practical solutions to EMI/EMC that you can apply immediately to your projects and products. Incorporating practical viewpoints substituted for mathematical theory, this book is accessible to technologists and technicians in addition to engineers, demystifying topics often considered "black magic". Through straight-forward analogies and interesting examples ranging from lightning to electric guitars, the author provides an explanation of electromagnetic fields that is not only practical and informative, but also fascinating and exciting.