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https://www.readbyqxmd.com/read/28783059/a-new-method-to-estimate-changes-in-glacier-surface-elevation-based-on-polynomial-fitting-of-sparse-icesat-glas-footprints
#1
Tianjin Huang, Li Jia, Massimo Menenti, Jing Lu, Jie Zhou, Guangcheng Hu
We present in this paper a polynomial fitting method applicable to segments of footprints measured by the Geoscience Laser Altimeter System (GLAS) to estimate glacier thickness change. Our modification makes the method applicable to complex topography, such as a large mountain glacier. After a full analysis of the planar fitting method to characterize errors of estimates due to complex topography, we developed an improved fitting method by adjusting a binary polynomial surface to local topography. The improved method and the planar fitting method were tested on the accumulation areas of the Naimona'nyi glacier and Yanong glacier on along-track facets with lengths of 1000 m, 1500 m, 2000 m, and 2500 m, respectively...
August 5, 2017: Sensors
https://www.readbyqxmd.com/read/28777665/an-anatomic-and-biomechanical-comparison-of-bankart-repair-configurations
#2
Christopher H Judson, Andreas Voss, Elifho Obopilwe, Felix Dyrna, Robert A Arciero, Kevin P Shea
BACKGROUND: Suture anchor repair for anterior shoulder instability can be performed using a number of different repair techniques, but none has been proven superior in terms of anatomic and biomechanical properties. Purpose/Hypothesis: The purpose was to compare the anatomic footprint coverage and biomechanical characteristics of 4 different Bankart repair techniques: (1) single row with simple sutures, (2) single row with horizontal mattress sutures, (3) double row with sutures, and (4) double row with labral tape...
August 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28723936/social-sensing-of-urban-land-use-based-on-analysis-of-twitter-users-mobility-patterns
#3
Aiman Soliman, Kiumars Soltani, Junjun Yin, Anand Padmanabhan, Shaowen Wang
A number of recent studies showed that digital footprints around built environments, such as geo-located tweets, are promising data sources for characterizing urban land use. However, challenges for achieving this purpose exist due to the volume and unstructured nature of geo-located social media. Previous studies focused on analyzing Twitter data collectively resulting in coarse resolution maps of urban land use. We argue that the complex spatial structure of a large collection of tweets, when viewed through the lens of individual-level human mobility patterns, can be simplified to a series of key locations for each user, which could be used to characterize urban land use at a higher spatial resolution...
2017: PloS One
https://www.readbyqxmd.com/read/28647841/anterior-cruciate-ligament-tibial-insertion-site-is-elliptical-or-triangular-shaped-in-healthy-young-adults-high-resolution-3-t-mri-analysis
#4
Yasutaka Tashiro, Gian Andrea Lucidi, Tom Gale, Kanto Nagai, Elmar Herbst, James J Irrgang, Yasuharu Nakashima, William Anderst, Freddie H Fu
PURPOSE: To clarify the morphology of anterior cruciate ligament (ACL) tibial insertion site in healthy young knees using high-resolution 3-T MRI. METHODS: Subjects were 50 ACL-reconstructed patients with a mean age of 21.4 ± 6.8 years. The contralateral healthy knees were scanned using high-resolution 3-T MRI. The tibial insertion sites of the anteromedial (AM) and posterolateral (PL) bundle fibres, and the ACL attachment on the anterior horn of lateral meniscus (AHLM) were segmented from the MR images, and 3D models were reconstructed to evaluate the morphology...
June 24, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28602907/an-efficient-architecture-to-support-digital-pathology-in-standard-medical-imaging-repositories
#5
Tiago Marques Godinho, Rui Lebre, Luís Bastião Silva, Carlos Costa
In the past decade, digital pathology and whole-slide imaging (WSI) have been gaining momentum with the proliferation of digital scanners from different manufacturers. The literature reports significant advantages associated with the adoption of digital images in pathology, namely, improvements in diagnostic accuracy and better support for telepathology. Moreover, it also offers new clinical and research applications. However, numerous barriers have been slowing the adoption of WSI, among which the most important are performance issues associated with storage and distribution of huge volumes of data, and lack of interoperability with other hospital information systems, most notably Picture Archive and Communications Systems (PACS) based on the DICOM standard...
July 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28593582/morphological-size-evaluation-of-the-mid-substance-insertion-areas-and-the-fan-like-extension-fibers-in-the-femoral-acl-footprint
#6
Makoto Suruga, Takashi Horaguchi, Takanori Iriuchishima, Yoshiyuki Yahagi, Genki Iwama, Yasuaki Tokuhashi, Shin Aizawa
PURPOSE: The purpose of this study was to evaluate the detailed anatomy of the femoral anterior cruciate ligament (ACL) insertion site, with special attention given to the morphology of the mid-substance insertion areas and the fan-like extension fibers. METHODS: Twenty-three non-paired human cadaver knees were used (7 Males, 16 Females, median age 83, range 69-96). All soft tissues around the knee were resected except the ligaments. The ACL was divided into antero-medial (AM) and postero-lateral (PL) bundles according to the difference in macroscopic tension patterns...
June 7, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28544514/dynamic-enhancer-function-in-the-chromatin-context
#7
REVIEW
Ido Goldstein, Gordon L Hager
Enhancers serve as critical regulatory elements in higher eukaryotic cells. The characterization of enhancer function has evolved primarily from genome-wide methodologies, including chromatin immunoprecipitation (ChIP-seq), DNase-I hypersensitivity (DNase-seq), digital genomic footprinting (DGF), and the chromosome conformation capture techniques (3C, 4C, and Hi-C). These population-based assays average signals across millions of cells and lead to enhancer models characterized by static and sequential binding...
May 22, 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/28527951/digital-food-photography-technology-improves-efficiency-and-feasibility-of-dietary-intake-assessments-in-large-populations-eating-ad-libitum-in-collective-dining-facilities
#8
Holly L McClung, Catherine M Champagne, H Raymond Allen, Susan M McGraw, Andrew J Young, Scott J Montain, Aaron P Crombie
BACKGROUND: Accurate assessment of dietary intake continues to challenge researchers, especially in field, or non-laboratory settings. OBJECTIVE: In this study, digital food photography (DFP) methodology was used to assess nutritional intake (NI) of Soldiers participating in the US Army's Ranger Selection and Assessment Program (RASP). METHODS: During this high-intensity six-week course, Soldiers complete simulated operational missions, perform various military tasks, and importantly, eating time is severely limited...
May 17, 2017: Appetite
https://www.readbyqxmd.com/read/28476605/personal-branding-a-primer-for-radiology-trainees-and-radiologists
#9
Vivek Kalia, Amy K Patel, Andrew K Moriarity, Cheri L Canon
A radiologist's personal brand is a composite of many parts in one's professional life. In an age where work quality and digital footprints are tracked and measured more than ever before, it behooves radiologists to develop and curate their own individual brands in effective ways. Personal branding consists of the decisions we make, both consciously and unconsciously, which affect our reputation and the likelihood of seeking our services in the future for both patients and referring providers. As hospital systems are increasingly adjusting their systems to cater to better patient experiences, it is imperative that radiologists similarly adjust our practice patterns to accommodate the needs of the new paradigm of value-based care...
July 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28432532/a-portable-battery-powered-microfluidic-impedance-cytometer-with-smartphone-readout-towards-personal-health-monitoring
#10
Niloy Talukder, Abbas Furniturewalla, Tuan Le, Matthew Chan, Shreyas Hirday, Xinnan Cao, Pengfei Xie, Zhongtian Lin, Azam Gholizadeh, Steve Orbine, Mehdi Javanmard
We present a portable system for personalized blood cell counting consisting of a microfluidic impedance cytometer and portable analog readout electronics, feeding into an analog-to-digital converter (ADC), and being transmitted via Bluetooth to a user-accessible mobile application. We fabricated a microfluidic impedance cytometer with a novel portable analog readout. The novel design of the analog readout, which consists of a lock-in-amplifier followed by a high-pass filter stage for subtraction of drift and DC offset, and a post-subtraction high gain stage, enables detection of particles and cells as small as 1 μm in diameter, despite using a low-end 8-bit ADC...
June 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28352238/communicating-the-neuroscience-of-psychopathy-and-its-influence-on-moral-behavior-protocol-of-two-experimental-studies
#11
Robert Blakey, Adrian D Askelund, Matilde Boccanera, Johanna Immonen, Nejc Plohl, Cassandra Popham, Clarissa Sorger, Julia Stuhlreyer
Neuroscience has identified brain structures and functions that correlate with psychopathic tendencies. Since psychopathic traits can be traced back to physical neural attributes, it has been argued that psychopaths are not truly responsible for their actions and therefore should not be blamed for their psychopathic behaviors. This experimental research aims to evaluate what effect communicating this theory of psychopathy has on the moral behavior of lay people. If psychopathy is blamed on the brain, people may feel less morally responsible for their own psychopathic tendencies and therefore may be more likely to display those tendencies...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28302426/proximity-of-lateral-critical-structures-to-the-all-epiphyseal-outside-in-femoral-tunnels-in-pediatric-anterior-cruciate-ligament-reconstruction
#12
Mark K Lane, Jennifer Mutch, Kaitlyn Ratkowiak, Stephen E Lemos, Kunal Kalra
PURPOSE: To describe the proximity of the lateral critical structures (peroneal nerve [PN], popliteus tendon [PT], lateral collateral ligament [LCL], and articular cartilage [AC]) to the femoral tunnel for outside-in all-epiphyseal anterior cruciate ligament (ACL) reconstruction in reference to knee flexion angle. METHODS: All-epiphyseal ACL reconstructions were performed in 12 human cadaveric knees using arthroscopy and outside-in drilling for anatomic femoral tunnel placement that was ensured by identifying the center of the total ACL footprint...
March 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28283721/the-importance-of-blumensaat-s-line-morphology-for-accurate-femoral-acl-footprint-evaluation-using-the-quadrant-method
#13
Yoshiyuki Yahagi, Takanori Iriuchishima, Takashi Horaguchi, Makoto Suruga, Yasuaki Tokuhashi, Shin Aizawa
PURPOSE: The purpose of this study was to evaluate the difference in the center position of the ACL footprint based on grid placement using the quadrant method according to the morphological variations of the Blumensaat's line. METHODS: Fifty-nine non-paired human cadaver knees were used. The ACL was cut in the middle, and the femoral bone was cut at the most proximal point of the femoral notch, and the digital images were evaluated using Image J software. The femoral ACL footprint was periphery outlined and the center position was automatically measured...
March 10, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28272256/a-morphometric-study-of-the-middle-and-lower-cervical-vertebral-endplates-and-their-components
#14
Hang Feng, Xiang-Yi Fang, Da-Geng Huang, Cheng-Cheng Yu, Hou-Kun Li, Song-Chuan Zhao, Chao-Yuan Ge, Ru-Hai Bai, Ding-Jun Hao
Cervical disc arthroplasty is a common method of treating cervical degenerative disease. However, the footprints of most prosthesis dimensions are obtained from data of Caucasian individuals. Besides, there is a large discrepancy between footprints of currently available cervical disc prostheses and anatomic dimensions of cervical endplates. We aimed to detail the three-dimensional (3D) anatomic morphology of the subaxial cervical vertebral endplate, utilizing high-precision, high-resolution scanning equipment, and provide a theoretical basis for designing appropriate disc prostheses for Chinese patients...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28248374/ultra-fast-analog-to-digital-converter-based-on-a-nonlinear-triplexer-and-an-optical-coder-with-a-photonic-crystal-structure
#15
Farhad Mehdizadeh, Mohammad Soroosh, Hamed Alipour-Banaei, Ebrahim Farshidi
In this paper, we propose what we believe is a novel all-optical analog-to-digital converter (ADC) based on photonic crystals. The proposed structure is composed of a nonlinear triplexer and an optical coder. The nonlinear triplexer is for creating discrete levels in the continuous optical input signal, and the optical coder is for generating a 2-bit standard binary code out of the discrete levels coming from the nonlinear triplexer. Controlling the resonant mode of the resonant rings through optical intensity is the main objective and working mechanism of the proposed structure...
March 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/28241238/the-utilization-of-social-media-in-the-hearing-aid-community
#16
Moumita Choudhury, Zoë Dinger, Elena Fichera
Purpose: This study investigated the utilization of social media by the hearing aid (HA) community. The purpose of this survey was to analyze the participation of HA community in the social media websites. Method: A systematic survey of online HA-related social media sources was conducted. Such sources were identified using appropriate search terms. Social media participation was quantified on the basis of posts and "likes." Results: Five hundred fifty-seven social media sources were identified, including 174 Twitter accounts, 172 YouTube videos, 91 Facebook pages, 20 Facebook groups, 71 blogs, and 29 forums...
March 1, 2017: American Journal of Audiology
https://www.readbyqxmd.com/read/28058719/segmented-separable-footprint-projector-for-digital-breast-tomosynthesis-and-its-application-for-subpixel-reconstruction
#17
Jiabei Zheng, Jeffrey A Fessler, Heang-Ping Chan
PURPOSE: Digital forward and back projectors play a significant role in iterative image reconstruction. The accuracy of the projector affects the quality of the reconstructed images. Digital breast tomosynthesis (DBT) often uses the ray-tracing (RT) projector that ignores finite detector element size. This paper proposes a modified version of the separable footprint (SF) projector, called the segmented separable footprint (SG) projector, that calculates efficiently the Radon transform mean value over each detector element...
March 2017: Medical Physics
https://www.readbyqxmd.com/read/27922603/digital-footprints-facilitating-large-scale-environmental-psychiatric-research-in-naturalistic-settings-through-data-from-everyday-technologies
#18
N Bidargaddi, P Musiat, V-P Makinen, M Ermes, G Schrader, J Licinio
Digital footprints, the automatically accumulated by-products of our technology-saturated lives, offer an exciting opportunity for psychiatric research. The commercial sector has already embraced the electronic trails of customers as an enabling tool for guiding consumer behaviour, and analogous efforts are ongoing to monitor and improve the mental health of psychiatric patients. The untargeted collection of digital footprints that may or may not be health orientated comprises a large untapped information resource for epidemiological scale research into psychiatric disorders...
February 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/27875151/hindsight-encouraging-exploration-through-direct-encoding-of-personal-interaction-history
#19
Mi Feng, Cheng Deng, Evan M Peck, Lane Harrison
Physical and digital objects often leave markers of our use. Website links turn purple after we visit them, for example, showing us information we have yet to explore. These "footprints" of interaction offer substantial benefits in information saturated environments - they enable us to easily revisit old information, systematically explore new information, and quickly resume tasks after interruption. While applying these design principles have been successful in HCI contexts, direct encodings of personal interaction history have received scarce attention in data visualization...
January 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/27829413/feasibility-of-digital-footprint-data-for-health-analytics-and-services-an-explorative-pilot-study
#20
Marja Harjumaa, Saila Saraniemi, Saara Pekkarinen, Minna Lappi, Heidi Similä, Minna Isomursu
BACKGROUND: As a result of digitalization, data is available about almost every aspect of our lives. Personal data collected by individuals themselves or stored by organizations interacting with people is known as a digital footprint. The purpose of this study was to identify prerequisites for collecting and using digital data that could be valuable for health data analytics and new health services. METHODS: Researchers and their contacts involved in a nationwide research project focusing on digital health in Finland were asked to participate in a pilot study on collecting their own personal data from various organizations of their own choice, such as retail chains, banks, insurance companies, and healthcare providers...
November 9, 2016: BMC Medical Informatics and Decision Making
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