scholarly journals Forensic Engineering And Laser Scan Technology

Author(s):  
Steven M. Schorr

For The First 40+ Years, Folding Rulers, Tape Measures, And Black And White Photography Were The Standard Tools Of The Trade For Collision Reconstruction Engineers. Armed With These Tools, Engineers Collected As Much Data As Possible In Order To Evaluate A Collision Sequence. Then, And Still True Today, The Quality Of The Data Collected Directly Affects The Accuracy And The Depth Of The Analysis. However, Conventional Data Collection Tools Limited The Quality Of The Recorded Data. Typical Problems Encountered In The Past By Collision Reconstruction Engineers Included The Difficulty Associated With Re-Creating Realistic Representations Of The Collision Area And Vehicle(S), As Well As Performing Diagnostic Examinations Of Vehicles And Measuring Roadway Curvature, Elevations, Roadway Friction Factors, Illumination Levels, And Vehicle Dimensions. New Technology Has Provided Forensic Engineers With The Tools To Address These, And Other Reconstruction Needs. Through The Utilization Of Cutting-Edge Laser Scanning Technology, Engineers Can Now Collect Numerous Measurements Cost-Effectively, With Unprecedented Accuracy, At The Speed Of (Laser) Light. This New Technology Has The Ability To Rapidly Advance The Field Of Forensic Engineering, Not Just In The Area Of Collision Reconstruction, But In Any Discipline That Requires Precision Measurements.

1985 ◽  
Vol 12 (2) ◽  
pp. 271-295 ◽  
Author(s):  
Brian MacWhinney ◽  
Catherine Snow

ABSTRACTThe study of language acquisition underwent a major revolution in the late 1950s as a result of the dissemination of technology permitting high-quality tape-recording of children in the family setting. This new technology led to major breakthroughs in the quality of both data and theory. The field is now at the threshold of a possible second major breakthrough stimulated by the dissemination of personal computing. Researchers are now able to transcribe tape-recorded data into computer files. With this new medium it is easy to conduct global searches for word combinations across collections of files. It is also possible to enter new codings of the basic text line. Because of the speed and accuracy with which computer files can be copied, it is now much easier to share data between researchers. To foster this sharing of computerized data, a group of child language researchers has established the Child Language Data Exchange System (CHILDES). This article details the formation of the CHILDES, the governance of the system, the nature of the database, the shape of the coding conventions, and the types of computer programs being developed.


PEDIATRICS ◽  
1993 ◽  
Vol 91 (2) ◽  
pp. 501-504
Author(s):  
J. P. Relier

When one considers the changes that have occurred in trends of perinatal mortality or the proportion of severe handicap in infants or adults in most Western countries in the past 20 years, there has been a profound change in the prognosis for life and for long-term sequelae after perinatal distress. The technical reasons for this extraordinary progress are straightforward. But it is much more difficult to Understand the profound effects on the quality of the lives that have come into being as a result of these advances. Indeed, it is hard to assess the precise consequences directly related to the new technology, as opposed to effects related to the long separation of mother and child after an abnormal birth and in pathologic states of the newborn.


1992 ◽  
Vol 6 (2) ◽  
pp. 109-112
Author(s):  
Li Yunzu

Continuing education is a means of promoting technological development in an enterprise. In the past ten years, Wuhan Iron and Steel Company (WISCO) has achieved significant success in this field. From 1986 to 1990, WISCO ran 573 seminars and classes for advanced studies. Participating specialized staff totalled 18 302. In that period, 127 research projects produced successful results, and 85 of them led to instant economic benefits amounting to 38.46 million Yuan. Li Yunzu describes WISCO's approach to continuing education. He stresses the importance of focusing continuing education programmes on the economic development of the enterprise. Full consideration should be given to seminars and advanced courses on special topics, the development of new technology and improving the quality of employees. It is also necessary to establish a pattern of continuing education that integrates education, research and production.


2021 ◽  
Vol 26 ◽  
pp. 233-249
Author(s):  
Piotr Kurpiewski

This paper aims to reflect on various aspects of memory politics present in contemporary historical cinema. All films depicting the past carry certain theses or thoughts of a political nature meant to strengthen the contemporary discourse on Polish (and not only) history. The paper presents analyses of three sorts of memory politics: pedagogy of pride, pedagogy of shame and visual historiography (historiophoty). The black-and-white heroism referred to as the reading book heroism presented in Caroline (Karolina), History of Roj (Historia Roja), Broken ear of grain (Zerwany kłos) and in The Outcast (Wyklęty) are examples of pedagogy of pride, favoured by the current Polish authorities from the Law and Justice party (Prawo i Sprawiedliwość). Such works as the Oscar-winning Ida, Summer solstice (Letnie przesilenie) and Consent (Zgoda) are, in turn, emanations of the so-called pedagogy of shame and can be seen as a reference to the message of ambiguous masterpieces from the period of the ‘Polish film school’, in particular to the artistic output of Andrzej Munk. A separate place is to be dedicated to historical works by Wojciech Smarzowski, who in Rose (Róża) and Volhynia (Wołyń) consistently creates visually credible tales of history in order to reflect in a general manner on the non-existent world of the past and ordinary people living therein. The main conclusion of the article is the statement that historical politics functioning in films depicting the past is meant to be a temporary intervention which may function in a long-term perspective only, given the high artistic quality of the artwork. Otherwise the movie quickly falls into oblivion and loses its influence on the collective social memory.


Author(s):  
Jianxiong Wu

Vast and fast technological advancements mark the new millennium. New emerging technologies are changing the world and our society at a magnitude and scope never witnessed before. Who are our students in this new millennium? What do they look like? Are they a fundamentally different new generation as some claim, or do they still look similar to us in many ways? A clear understanding of the characteristics of our students is vitally important for our educational practice. The current study was conducted to contribute to this understanding. The findings of the study show that while students nowadays do enjoy a much broader access to new technology than students of the past, they still look similar to us in many ways. As educators, it is important for us to treat our students as individuals instead of just labeling them and placing them in a black and white dichotomy.


2019 ◽  
Vol 1 (1) ◽  
pp. 144-154
Author(s):  
Vladimir Shcherbakov ◽  
Alexey Konkin ◽  
Angelina Zemerova

The article provides an overview of the most significant developments of the Scientific Re-search Laboratory "Diagnostics of pavements and road bed" over the past 15 years. Instruments for high-precision measurements of curvilinear distances to determine the length of rail lashes on the ESP in the process of their manufacture, instruments for determining the geometry of the rail track, laser scanning of railways, SAU-3D for the motor grader, electric bollard, straightening-tamping-trimming and crushed-stone cleaning machines, rail navigator and devices for determining the even-ness on the roads. The general information on each development is given, the design features, the purpose of the development, information on patents and metrological certification are shown. It also provides information on the ongoing research on the use of unmanned aerial vehicles to monitor the overhaul of the railway track.


Author(s):  
A. Murtiyoso ◽  
P. Grussenmeyer ◽  
T. Landes ◽  
H. Macher

Abstract. Heritage documentation has benefitted greatly from significant developments in sensor technology during the past two decades. Miniaturisation of sensors is also an important aspect in the development of low cost sensors, always interesting in heritage projects where budgetary constraints are often present. Among these sensors, the solid-state lidar has begun to attract attention, partly due to its integration in Apple Inc.’s latest version of the iPhone and iPad series. We hypothesise that this type of sensor will see a lot of use in the near future; however, the question remains whether they are sufficient for heritage documentation purposes. In this paper, results from the 2020 iPad Pro SSL point cloud will be assessed and compared to more traditional techniques for 3D scanning (photogrammetry and terrestrial laser scanning). While understandably the geometric quality of benchmark-level techniques such as these remain undeniably better, at least for the moment, the paper concludes that SSL sensors may nevertheless be sufficient for some lower-precision applications.


Author(s):  
K. T. Tokuyasu

During the past investigations of immunoferritin localization of intracellular antigens in ultrathin frozen sections, we found that the degree of negative staining required to delineate u1trastructural details was often too dense for the recognition of ferritin particles. The quality of positive staining of ultrathin frozen sections, on the other hand, has generally been far inferior to that attainable in conventional plastic embedded sections, particularly in the definition of membranes. As we discussed before, a main cause of this difficulty seemed to be the vulnerability of frozen sections to the damaging effects of air-water surface tension at the time of drying of the sections.Indeed, we found that the quality of positive staining is greatly improved when positively stained frozen sections are protected against the effects of surface tension by embedding them in thin layers of mechanically stable materials at the time of drying (unpublished).


Author(s):  
Kenneth C. Moore

The University of Iowa Central Electron Microscopy Research Facility(CEMRF) was established in 1981 to support all faculty, staff and students needing this technology. Initially the CEMRF was operated with one TEM, one SEM, three staff members and supported about 30 projects a year. During the past twelve years, the facility has replaced all instrumentation pre-dating 1981, and now includes 2 TEM's, 2 SEM's, 2 EDS systems, cryo-transfer specimen holders for both TEM and SEM, 2 parafin microtomes, 4 ultamicrotomes including cryoultramicrotomy, a Laser Scanning Confocal microscope, a research grade light microscope, an Ion Mill, film and print processing equipment, a rapid cryo-freezer, freeze substitution apparatus, a freeze-fracture/etching system, vacuum evaporators, sputter coaters, a plasma asher, and is currently evaluating scanning probe microscopes for acquisition. The facility presently consists of 10 staff members and supports over 150 projects annually from 44 departments in 5 Colleges and 10 industrial laboratories. One of the unique strengths of the CEMRF is that both Biomedical and Physical scientists use the facility.


2012 ◽  
Vol 9 (1) ◽  
pp. 57-60 ◽  
Author(s):  
Gina G Mentzer ◽  
Alex J Auseon

Heart failure (HF) affects more than 5 million people and has an increasing incidence and cost burden. Patients note symptoms of dyspnea and fatigue that result in a decreased quality of life, which has not drastically improved over the past decades despite advances in therapies. The assessment of exercise capacity can provide information regarding patient diagnosis and prognosis, while doubling as a potential future therapy. clinically, there is acceptance that exercise is safe in hf and can have a positive impact on morbidity and quality of life, although evidence for improvement in mortality is still lacking. specific prescriptions for exercise training have not been developed because many variables and confounding factors have prevented research trials from demonstrating an ideal regimen. Physicians are becoming more aware of the indices and goals for hf patients in exercise testing and therapy to provide comprehensive cardiac care. it is further postulated that a combination of exercise training and pharmacologic therapy may eventually provide the most benefits to those suffering from hf.


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