Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (4758)
- Engineering (1316)
- Computer Sciences (1205)
- Education (1195)
- Environmental Sciences (974)
-
- Social and Behavioral Sciences (857)
- Physics (737)
- Life Sciences (608)
- Chemistry (562)
- Law (521)
- Arts and Humanities (500)
- Mathematics (422)
- Earth Sciences (417)
- Computer Engineering (333)
- Higher Education (316)
- Electrical and Computer Engineering (300)
- Statistics and Probability (279)
- Science and Mathematics Education (262)
- Business (243)
- History (222)
- Natural Resources and Conservation (212)
- Databases and Information Systems (196)
- Mechanical Engineering (182)
- Medicine and Health Sciences (182)
- Oceanography and Atmospheric Sciences and Meteorology (177)
- Natural Resources Management and Policy (161)
- Astrophysics and Astronomy (159)
- Geology (157)
- Public Affairs, Public Policy and Public Administration (148)
- Teacher Education and Professional Development (146)
- Institution
-
- University of Nebraska - Lincoln (856)
- Wright State University (323)
- Louisiana State University (273)
- California Polytechnic State University, San Luis Obispo (244)
- TÜBİTAK (244)
-
- Brigham Young University (227)
- University of Nevada, Las Vegas (227)
- University of South Florida (213)
- Missouri University of Science and Technology (199)
- University of Central Florida (198)
- Old Dominion University (175)
- Singapore Management University (164)
- Utah State University (163)
- Air Force Institute of Technology (148)
- Rochester Institute of Technology (139)
- University of Northern Iowa (129)
- Wayne State University (123)
- University of Montana (117)
- COBRA (111)
- University of Kentucky (110)
- University of New Hampshire (109)
- West Virginia University (107)
- Edith Cowan University (103)
- New Jersey Institute of Technology (101)
- Western Michigan University (98)
- Portland State University (93)
- California State University, San Bernardino (91)
- Syracuse University (89)
- Chinese Chemical Society | Xiamen University (86)
- University of Texas Rio Grande Valley (82)
- Keyword
-
- Education (127)
- Western Australia (60)
- Mathematics (58)
- Newsletter (50)
- Research (47)
-
- Higher education (46)
- Newspaper (46)
- Minutes (45)
- Economics (41)
- Faculty (40)
- Periodicals (35)
- Students (33)
- College for Professional Studies (32)
- Communal forests (30)
- Community forests (30)
- Community-owned forests (30)
- Computer science (30)
- Faculty Senate (29)
- MS Computer and Information Technology (29)
- Physics (29)
- Engineering (28)
- Groundwater (28)
- Land use (27)
- Statistics (27)
- Technology (27)
- Grand Valley State University; Publications; Universities and colleges (26)
- UAB (26)
- School of Computer & Information Science (25)
- DeafDigest (24)
- Geology (24)
- Publication
-
- Theses and Dissertations (451)
- Electronic Theses and Dissertations (231)
- Faculty Publications (195)
- Computer Science & Engineering Syllabi (165)
- Theses (156)
-
- Research Collection School Of Computing and Information Systems (134)
- LSU Master's Theses (123)
- Journal of Modern Applied Statistical Methods (101)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (96)
- LSU Doctoral Dissertations (93)
- USF Tampa Graduate Theses and Dissertations (93)
- Dissertations (91)
- Turkish Journal of Chemistry (87)
- Journal of Electrochemistry (86)
- United States Department of Agriculture Wildlife Services: Staff Publications (81)
- Theses Digitization Project (74)
- Nebraska Tractor Tests (59)
- Research outputs pre 2011 (59)
- UNLV Retrospective Theses & Dissertations (55)
- Physics Faculty Research & Creative Works (53)
- Thai Environment (51)
- Turkish Journal of Physics (51)
- Wildlife Damage Management Conference Proceedings (51)
- Electrical and Computer Engineering Faculty Research & Creative Works (50)
- Masters Theses (50)
- Articles (45)
- Dartmouth Scholarship (45)
- International Conference on Information and Communication Technologies (44)
- Physics Faculty Publications (44)
- Commencement Programs (41)
- Publication Type
- File Type
Articles 1981 - 2010 of 10399
Full-Text Articles in Entire DC Network
Prepare Your Mind For Learning, Deborah K. Smith, Trevor T. Moores, Jerry Cha-Jan Chang
Prepare Your Mind For Learning, Deborah K. Smith, Trevor T. Moores, Jerry Cha-Jan Chang
Management, Entrepreneurship and Technology Faculty Research
The learning process must evolve and expand throughout one's IT career. Most would agree that's often easier said than done. Here are some ways professionals can overcome mental blocks that may prevent learning.
Temple: The Story Of An Urban University, Eric G. Lovik
Temple: The Story Of An Urban University, Eric G. Lovik
Essays in Education
This article provides a brief history of the formation of Temple College in the late 19th century and its official recognition as a university during the early years of the 20th century. The institution evolved from very humble origins of private tutoring sessions in a Baptist pastor’s office. In only a few decades, the institution attracted faculty with reputable academic credentials, offered undergraduate degrees in practical and scholarly fields, and provided graduate and professional education to men and women of the working class, various racial and national heritages, and wealthy families. Despite numerous obstacles, Temple’s founder, Russell Conwell, turned his …
Taming The Hydra: A Triangulation Approach To Assessing An Interdisciplinary Core Curriculum, Brenda Thomas, Tracy Lightcap, Linda Rosencranz
Taming The Hydra: A Triangulation Approach To Assessing An Interdisciplinary Core Curriculum, Brenda Thomas, Tracy Lightcap, Linda Rosencranz
Essays in Education
The development of interdisciplinary core curricula has mushroomed in recent years as the need to accommodate general education to an explosion of knowledge cutting across disciplines and increased global interdependence has emerged. This trend has not been accompanied, however, by new methods of assessment. In this paper we describe the use of triangulation strategies for evaluating interdisciplinary core programs, then present a case study of an assessment plan based on triangulation drawn from experience at our institution. We conclude with some recommendations concerning establishing triangulation assessments of interdisciplinary core programs.
The Ultrasonic/Shear-Force Microscope: Integrating Ultrasonic Sensing Into A Near-Field Scanning Optical Microscope, Andres H. La Rosa, Xiquan Cui, J. Mccollum, Nan Li, Richard Nordstrom
The Ultrasonic/Shear-Force Microscope: Integrating Ultrasonic Sensing Into A Near-Field Scanning Optical Microscope, Andres H. La Rosa, Xiquan Cui, J. Mccollum, Nan Li, Richard Nordstrom
Physics Faculty Publications and Presentations
An ultrasonic transducer is incorporated into a near-field scanning optical microscope (NSOM) to augment its versatility to characterize the properties of layers adsorbed to a sample's surface. Working under typical NSOM operation conditions, the ultrasonic transducer--attached underneath the sample--demonstrates sufficient sensitivity to monitor the waves generated by the tapered NSOM probe that oscillates in the proximity of, and parallel to, the sample's top surface. This capability makes the newly integrated ultrasonic/shear-force microscope a valuable diagnostic tool in the study of sliding friction and surface phenomena in general. Here, it is used to concurrently and independently monitor the effects that probe-sample …
A Prediction Code For The Thrust Performance Of Two-Dimensional, Non-Axisynnetric, Converging Diverging Nozzles, Angela M. Geatz
A Prediction Code For The Thrust Performance Of Two-Dimensional, Non-Axisynnetric, Converging Diverging Nozzles, Angela M. Geatz
Theses and Dissertations
The objective of this research is to develop a prediction code for the Air Force Research Laboratory Propulsion Directorate that can accurately determine the gross thrust coefficient for a user defined nonaxisymmetric two-dimensional converging diverging nozzle. The code includes the effects of friction, angularity, and expansion losses on nozzle efficiency. To demonstrate the prediction method, the generated computational results were compared to experimental data, as well as computational results from other existing nozzle performance codes, for a number of different nozzle geometries. The nozzle internal performance prediction code showed excellent agreement with experimental data in predicting the gross thrust performance …
Operator State Estimation For Adaptive Aiding In Uninhabited Combat Air Vehicles, Christopher A. Russell
Operator State Estimation For Adaptive Aiding In Uninhabited Combat Air Vehicles, Christopher A. Russell
Theses and Dissertations
This research demonstrated the first closed-loop implementation of adaptive automation using operator functional state in an operationally relevant environment. In the Uninhabited Combat Air Vehicle (UCAV) environment, operators can become cognitively overloaded and their performance may decrease during mission critical events. This research demonstrates an unprecedented closed-loop system, one that adaptively aids UCAV operators based on their cognitive functional state A series of experiments were conducted to 1) determine the best classifiers for estimating operator functional state, 2) determine if physiological measures can be used to develop multiple cognitive models based on information processing demands and task type, 3) determine …
Combat Identification With Sequential Observations, Rejection Option, And Out-Of-Library Targets, Timothy W. Albrecht
Combat Identification With Sequential Observations, Rejection Option, And Out-Of-Library Targets, Timothy W. Albrecht
Theses and Dissertations
This research extends a mathematical framework to select the optimal sensor ensemble and fusion method across multiple decision thresholds subject to warfighter constraints for a combat identification (CID) system. The formulation includes treatment of exemplars from target classes on which the CID system classifiers are not trained (out-of-library classes) and enables the warfighter to optimize a CID system without explicit enumeration of classifier error costs. A time-series classifier design methodology is developed and applied, yielding a multi-variate Gaussian hidden Markov model (HMM). The extended CID framework is used to compete the HMM-based CID system against a template-based CID system. The …
Establishment Of A System Operating Characteristic For Autonomous Wide Area Search Vehicles, Brian A. Kish
Establishment Of A System Operating Characteristic For Autonomous Wide Area Search Vehicles, Brian A. Kish
Theses and Dissertations
The optimal employment of autonomous search and destroy vehicles is addressed. The results apply to air, land, or water vehicles with 1, k, or infinite warheads. The specific scenarios considered involve an air vehicle searching a battle space for stationary targets in the presence of false targets. Encounters are modeled with uniform, Poisson, and normal distributions. Linear and circular search patterns are examined. All relevant parameters are extracted from intelligence information, the sensor performance specification, and the air vehicle performance specification. Analytic system effectiveness measures are derived using applied probability theory. The effectiveness measures derived in this dissertation handle time-varying …
The Outcome Of Mta As A Root End Filling Material: A Long Term Evaluation, Christopher M. Sechrist
The Outcome Of Mta As A Root End Filling Material: A Long Term Evaluation, Christopher M. Sechrist
Loma Linda University Electronic Theses, Dissertations & Projects
Periradicular surgery is a viable option to save natural teeth when non-surgical treatment fails or when endodontic retreatment is not feasible or contraindicated. Laboratory and animal studies have demonstrated that MTA is biocompatible, provides an excellent seal against penetrating bacteria, and promotes hard tissue healing. The purpose of this study was to provide long term (>3 years) clinical evidence for its use as a root-end filling material in endodontics. The clinical records of 294 patients who had MTA used during endodontic treatment from 1996 to 2001 were reviewed. From these, 75 patients whose root end cavities had been filled …
Time-Of-Flight Emission Profiles Of The Entire Plume Using Fast Imaging During Pulsed Laser Deposition Of Yba2Cu3O7−X, Carl J. Druffner, Glen P. Perram, Rand R. Biggers
Time-Of-Flight Emission Profiles Of The Entire Plume Using Fast Imaging During Pulsed Laser Deposition Of Yba2Cu3O7−X, Carl J. Druffner, Glen P. Perram, Rand R. Biggers
Faculty Publications
Emission time-of-flight (TOF) profiles have been obtained using gated imagery to further the process control during the pulsed laser deposition of the high temperature superconductor, YBa2Cu3O7−x. An intensified charge coupled device array was used to obtain a sequence of plume images at 10ns temporal resolution and 0.2mm spatial resolution. Plume imagery is transformed to TOF profiles and pulse-to-pulse variations removed using physically based smoothing techniques. Comparison with non-imaging sensors establishes excellent agreement, with systematic uncertainties in streaming speed and temperatures of less than 15% and 8%, respectively. The resulting streaming speeds of 0.4–1.2×10 …
A Tale Of Two Methods—Agent-Based Simulation And System Dynamics— Applied In A Biomedical Context: Acute Inflammatory Response, Wayne W. Wakeland, Joe Fusion, Brahm Goldstein
A Tale Of Two Methods—Agent-Based Simulation And System Dynamics— Applied In A Biomedical Context: Acute Inflammatory Response, Wayne W. Wakeland, Joe Fusion, Brahm Goldstein
Complex Systems Faculty Publications and Presentations
Three specific models of the acute inflammatory response were contrasted. The first model was a recently published and rather complex agent-based model used to simulate clinical trials in silico. The second model was a highly simplified system dynamics model developed during the present research. The third model was also recently published, with similar objectives to the first model, but utilized a complex set of 18 differential equations. The study found that the complexity of the first and third models is likely to adversely impact their usefulness, at least for other researchers. The second model, which is too simple to …
What Is Co2 Sequestration?, University Of North Dakota. Energy And Environmental Research Center
What Is Co2 Sequestration?, University Of North Dakota. Energy And Environmental Research Center
EERC Brochures and Fact Sheets
Fact sheet about the CO2 sequestration and the Plains CO2 Reduction (PCOR) Partnership. Defines CO2 sequestration and lists project partners. [This item is an outdated or superseded version and retained for historical purposes only. It may no longer reflect current information, policies, or practices.]
Carbon Dioxide (Co2) Sequestration – Controlling Co2 Emissions To The Atmosphere Through Capture And Long-Term Storage, University Of North Dakota. Energy And Environmental Research Center
Carbon Dioxide (Co2) Sequestration – Controlling Co2 Emissions To The Atmosphere Through Capture And Long-Term Storage, University Of North Dakota. Energy And Environmental Research Center
EERC Brochures and Fact Sheets
Fact sheet about CO2 sequestration. Defines direct and indirect sequestration and discusses the role of the Plains CO2 Reduction (PCOR) Partnership in advancing sequestration projects. [This item is an outdated or superseded version and retained for historical purposes only. It may no longer reflect current information, policies, or practices.]
The Weyburn Oil Field – A Model For Value-Added Direct Co2 Sequestration, University Of North Dakota. Energy And Environmental Research Center
The Weyburn Oil Field – A Model For Value-Added Direct Co2 Sequestration, University Of North Dakota. Energy And Environmental Research Center
EERC Brochures and Fact Sheets
Fact sheet about the Weyburn Oil Field. Discusses CO2 enhanced oil recovery (EOR) at Weyburn and research on combining EOR and CO2 sequestration at the site. [This item is an outdated or superseded version and retained for historical purposes only. It may no longer reflect current information, policies, or practices.]
Wetland Carbon Sinks In The Glaciated North American Prairie, University Of North Dakota. Energy And Environmental Research Center
Wetland Carbon Sinks In The Glaciated North American Prairie, University Of North Dakota. Energy And Environmental Research Center
EERC Brochures and Fact Sheets
Fact sheet about Prairie Pothole Region wetlands and their potential to sequester carbon. Coordinated by Ducks Unlimited Canada, U.S. Geological Survey, and Plains CO2 Reduction (PCOR) Partnership. [This item is an outdated or superseded version and retained for historical purposes only. It may no longer reflect current information, policies, or practices.]
Identifying Co2 Sequestration Opportunities, University Of North Dakota. Energy And Environmental Research Center
Identifying Co2 Sequestration Opportunities, University Of North Dakota. Energy And Environmental Research Center
EERC Brochures and Fact Sheets
Fact sheet about CO2 data organization and gathering to develop promising CO2 sequestration opportunities within the PCOR Partnership region. [This item is an outdated or superseded version and retained for historical purposes only. It may no longer reflect current information, policies, or practices.]
Center For Air Toxic Metals, University Of North Dakota. Energy And Environmental Research Center
Center For Air Toxic Metals, University Of North Dakota. Energy And Environmental Research Center
EERC Brochures and Fact Sheets
Brochure on the Energy & Environmental Research Center's Center for Air Toxic Metals (CATM), established by the U.S. Environmental Protection Agency. Discusses program direction, the five focused program areas, and benefits of affiliate membership. [This item is an outdated or superseded version and retained for historical purposes only. It may no longer reflect current information, policies, or practices.]
General Brochure, University Of North Dakota. Energy And Environmental Research Center
General Brochure, University Of North Dakota. Energy And Environmental Research Center
EERC Brochures and Fact Sheets
Brochure about the Energy & Environmental Research Center, including its philosophy, program areas, and Centers of Excellence. [This item is an outdated or superseded version and retained for historical purposes only. It may no longer reflect current information, policies, or practices.]
Final Report: Evaluation Of The Morphoedaphic Index And Sediment Diatoms For Inference Of Pre-European Settlement Total Phosphorus Concentration In Epa Region 10 Lakes, Rich Miller, Aaron Hook, Richard Petersen, Mark D. Sytsma
Final Report: Evaluation Of The Morphoedaphic Index And Sediment Diatoms For Inference Of Pre-European Settlement Total Phosphorus Concentration In Epa Region 10 Lakes, Rich Miller, Aaron Hook, Richard Petersen, Mark D. Sytsma
Center for Lakes and Reservoirs Publications and Presentations
Water quality in many Northwest lakes has declined over the past century due, in part, to increased anthropogenic nutrient loading (Edmonson and Lehman, 1981). Under the Clean Water Act, resource managers such as the Washington Department of Ecology, Oregon Department of Environmental Quality, and tribes are responsible for restoring and protecting the integrity of these waters. Targets for restoration or criteria for impairment are not well defined, however, and may naturally vary by geology, hydrology, morphometry, and climate.
One way to determine whether lakes are impaired and to identify restoration targets is to assess lake reference conditions (EPA 2000). Reference …
Branecode: A Program For Simulations Of Braneworld Dynamics, Martin Johannes, Gary Felder, Andrei V. Frolov, Lev Kofman, Marco Peloso
Branecode: A Program For Simulations Of Braneworld Dynamics, Martin Johannes, Gary Felder, Andrei V. Frolov, Lev Kofman, Marco Peloso
Physics: Faculty Publications
We describe an algorithm and a C++ implementation that we have written and made available for calculating the fully nonlinear evolution of 5D braneworld models with scalar fields. Bulk fields allow for the stabilization of the extra dimension. However, they complicate the dynamics of the system, so that analytic calculations (performed within an effective 4D theory) are usually only reliable for static bulk configurations or when the evolution of the extra dimension is negligible. In the general case, the nonlinear 5D dynamics can be studied numerically, and the algorithm and code we describe are the first ones of that type …
The Octarepeat Domain Of The Prion Protein Binds Cu(Ii) With Three Distinct Coordination Modes At Ph 7.4, Madhuri Chattopadhyay, Eric D. Walter, Dustin J. Newell, Pilgrim J. Jackson, Eliah Aronoff-Spencer, Jack Peisach, Gary J. Gerfen, Brian Bennett, William E. Antholine, Glenn L. Millhauser
The Octarepeat Domain Of The Prion Protein Binds Cu(Ii) With Three Distinct Coordination Modes At Ph 7.4, Madhuri Chattopadhyay, Eric D. Walter, Dustin J. Newell, Pilgrim J. Jackson, Eliah Aronoff-Spencer, Jack Peisach, Gary J. Gerfen, Brian Bennett, William E. Antholine, Glenn L. Millhauser
Physics Faculty Research and Publications
The prion protein (PrP) binds Cu2+ in its N-terminal octarepeat domain. This unusual domain is comprised of four or more tandem repeats of the fundamental sequence PHGGGWGQ. Previous work from our laboratories demonstrates that at full copper occupancy, each HGGGW segment binds a single Cu2+. However, several recent studies suggest that low copper occupancy favors different coordination modes, possibly involving imidazoles from histidines in adjacent octapeptide segments. This is investigated here using a combination of X-band EPR, S-band EPR, and ESEEM, along with a library of modified peptides designed to favor different coordination interactions. At pH 7.4, …
A Broker's Duty Of Best Execution In The Nineteenth And Early Twentieth Centuries, Francis J. Facciolo
A Broker's Duty Of Best Execution In The Nineteenth And Early Twentieth Centuries, Francis J. Facciolo
Pace Law Review
No abstract provided.
The Problematics Of A Social Constructivist Approach To Science, Bryce Christensen
The Problematics Of A Social Constructivist Approach To Science, Bryce Christensen
CLCWeb: Comparative Literature and Culture
In his paper, "The Problematics of a Social Constructivist Approach to Science," Bryce Christensen takes John Gray's hope that science can serve as a remedy for anthropocentrism as an entry point for discussing the debate between scientific realists and social constructivists. Christensen examines the way science appears to buttress the realist position when it confronts humans with truths that contradict their expectations and desires. In his discussion, Christensen also surveys the ways that science fits within social constructivist theory when it serves identifiable social needs or advances identifiable group interests. Further, Christensen identifies eschatological cosmology as an extreme test case …
Wireless Technology And Its Application In Wireless Local Area Networks Using The Ieee 802.11 Standards, Philip Curneen
Wireless Technology And Its Application In Wireless Local Area Networks Using The Ieee 802.11 Standards, Philip Curneen
Theses
This research thesis examines the area of wireless communication and its use in Wireless Local Area Networks (WLANs). It examines the Spread Spectrum methods of Frequency Hopping Spread Spectrum (FHSS) and Direct Sequence Spread Spectrum (DSSS) used in WLANs. The International Governing body, the Institute of Electrical and Electronic Engineers (IEEE) have devised standards and protocols called 802.11 to be used as guidelines for semiconductor chip and WLAN equipment manufacturers. These protocols have been adopted in implementing WLANs. Their specifications, which address data rates, bandwidth, power requirements, quality of service, spectrum management and security, are discussed in this thesis.
This …
Cuhk At Imageclef 2005: Cross-Language And Cross-Media Image Retrieval, Steven C. H. Hoi, J. Zhu, M. Lyu
Cuhk At Imageclef 2005: Cross-Language And Cross-Media Image Retrieval, Steven C. H. Hoi, J. Zhu, M. Lyu
Research Collection School Of Computing and Information Systems
In this paper, we describe our studies of cross-language and cross-media image retrieval at the ImageCLEF 2005. This is the first participation of our CUHK (The Chinese University of Hong Kong) group at ImageCLEF. The task in which we participated is the “bilingual ad hoc retrieval” task. There are three major focuses and contributions in our participation. The first is the empirical evaluation of language models and smoothing strategies for cross-language image retrieval. The second is the evaluation of cross-media image retrieval, i.e., combining text and visual contents for image retrieval. The last is the evaluation of bilingual image retrieval …
Book Review: Observing Variable Stars, Novae, And Supernovae, T. D. Oswalt
Book Review: Observing Variable Stars, Novae, And Supernovae, T. D. Oswalt
Publications
This document is Dr. Oswalt’s review of Observing Variable Stars, Novae, and Supernovae by Gerald North with Nick James Cambridge, 2004 230p, 0521820472 $45.00.
Toy Blocks And Rotational Physics, Gabriele U. Varieschi, Isabel R. Jully
Toy Blocks And Rotational Physics, Gabriele U. Varieschi, Isabel R. Jully
Physics Faculty Works
Have you ever observed a child playing with toy blocks? A favorite game is to build towers and then make them topple like falling trees. To the eye of a trained physicist this should immediately look like an example of the physics of “falling chimneys,” when tall structures bend and break in mid-air while falling to the ground. The game played with toy blocks can actually reproduce well what is usually seen in photographs of falling towers, such as the one that appeared on the cover of the September 1976 issue of The Physics Teacher.1 In this paper we describe …
Disabilities To Exceptional Abilities: Law Students With Disabilities, Nontraditional Learners, And The Law Teacher As A Learner, Jennifer Jolly-Ryan
Disabilities To Exceptional Abilities: Law Students With Disabilities, Nontraditional Learners, And The Law Teacher As A Learner, Jennifer Jolly-Ryan
Nevada Law Journal
No abstract provided.
The Limits Of Utilitarianism, Reza Dibadj
Hypothermia In Iranian Newborns. Incidence, Risk Factors And Related Complications, Farid Zayeri, Anoshirvan Kazemnejad, Mojtaba Ganjali, Gholamreza Babaei, Navid Khanafshar, Fatemeh Nayeri
Hypothermia In Iranian Newborns. Incidence, Risk Factors And Related Complications, Farid Zayeri, Anoshirvan Kazemnejad, Mojtaba Ganjali, Gholamreza Babaei, Navid Khanafshar, Fatemeh Nayeri
Saudi Medical Journal
OBJECTIVE: To determine the incidence rate and factors associated with hypothermia in Iranian newborns and to discover the effect of hypothermia on neonatal morbidity and mortality. METHODS: We selected a random sample of 1952 neonates using a multistage sampling technique from February 2004 to February 2005 in University Teaching Hospitals in Iran. We measured repeatedly at different time points the rectal temperature of these newborns. At each time of measurement, those with rectal temperature <36OC were considered as hypothermic. RESULTS: The obtained results showed that approximately one third of newborns became hypothermic immediately after birth. In addition, the regression analysis revealed that low birth weights, prematures, low apgar scores, infants of multiple pregnancies and those who received cardiopulmonary resuscitation had higher risk for being hypothermic. It was also found that hypothermia increases the risk of metabolic acidosis, jaundice, respiratory distress, hypoglycemia, pulmonary hemorrhage and death, regardless of the newborn9s weight and gestational age. CONCLUSION: There is an urgent need to train mothers and all levels of neonatal care staff to control this health problem in our country.