LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 190

Search options

  1. Book: Efficiency in sugar cane crop production

    Carvalho, Gustavo

    the case of State of Sao Paulo between the growing seasons 1990/1991 and 2005/2006

    2010  

    Author's details Gustavo Carvalho
    Language English
    Size 96 S. : Ill., graph. Darst., Kt.
    Publisher VDM Verl. Dr. Müller
    Publishing place Saarbrücken
    Publishing country Germany
    Document type Book
    HBZ-ID HT016254285
    ISBN 978-3-639-22865-6 ; 3-639-22865-0
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

    More links

    Kategorien

  2. Book: Minilaparoscopy

    Carvalho, Gustavo L. / Bonin, Eduardo / Loureiro, Marcelo / Malcher, Flavio / Gagstatter, Friedrich

    cholecystectomy and hernia repair

    2014  

    Author's details Gustavo L. Carvalho
    Language English
    Size 50 S. : zahlr. Ill., 28 cm, 204 g
    Publisher Endo-Press
    Publishing place Tuttlingen
    Publishing country Germany
    Document type Book
    HBZ-ID HT018635676
    ISBN 978-3-89756-545-6 ; 3-89756-545-5
    Database Catalogue ZB MED Medicine, Health

    More links

    Kategorien

  3. Article ; Online: Oral isotretinoin for the treatment of chronic pityriasis versicolor: case report and literature review.

    Veasey, John Verrinder / Carvalho, Gustavo de Sá Menezes / Valinoto, Guilherme Camargo Julio

    Anais brasileiros de dermatologia

    2024  

    Language English
    Publishing date 2024-04-25
    Publishing country Spain
    Document type Case Reports
    ZDB-ID 433655-0
    ISSN 1806-4841 ; 0365-0596
    ISSN (online) 1806-4841
    ISSN 0365-0596
    DOI 10.1016/j.abd.2023.08.014
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Book ; Online: Dendrogram distance

    Carvalho, Gustavo Sutter / Ponti, Moacir Antonelli

    an evaluation metric for generative networks using hierarchical clustering

    2023  

    Abstract: We present a novel metric for generative modeling evaluation, focusing primarily on generative networks. The method uses dendrograms to represent real and fake data, allowing for the divergence between training and generated samples to be computed. This ... ...

    Abstract We present a novel metric for generative modeling evaluation, focusing primarily on generative networks. The method uses dendrograms to represent real and fake data, allowing for the divergence between training and generated samples to be computed. This metric focus on mode collapse, targeting generators that are not able to capture all modes in the training set. To evaluate the proposed method it is introduced a validation scheme based on sampling from real datasets, therefore the metric is evaluated in a controlled environment and proves to be competitive with other state-of-the-art approaches.
    Keywords Computer Science - Machine Learning ; Computer Science - Computer Vision and Pattern Recognition
    Publishing date 2023-11-28
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  5. Article: UV Dermoscopy for the Diagnosis of Pityrosporum Folliculitis.

    Silva, Arthur Macedo Goulart / Michalany, Alexandre Ozores / de Sá Menezes Carvalho, Gustavo

    Dermatology practical & conceptual

    2024  Volume 14, Issue 1

    Language English
    Publishing date 2024-01-01
    Publishing country Austria
    Document type Letter
    ZDB-ID 2685397-8
    ISSN 2160-9381
    ISSN 2160-9381
    DOI 10.5826/dpc.1401a92
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Book ; Online: Climate finance for Canadian cities

    Carvalho, Gustavo

    is debt financing a viable alternative?

    (IMFG papers on municipal finance and governance ; 2018, no. 37)

    2018  

    Author's details By Gustavo Carvalho
    Series title IMFG papers on municipal finance and governance ; 2018, no. 37
    Language English
    Size 1 Online-Ressource (circa 62 Seiten), Illustrationen
    Document type Book ; Online
    ISBN 9780772709950 ; 0772709955
    Database ECONomics Information System

    More links

    Kategorien

  7. Book ; Thesis: Zur Optimierung von Diagnostik und Therapie der Behandlung der traumatischen Läsionen des Plexus brachialis

    Carvalho, Gustavo Adolpho de

    1997  

    Author's details vorgelegt von Gustavo Adolpho de Carvalho
    Language German
    Size III, 88 Bl. : Ill., graph. Darst.
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Hannover, Med. Hochsch., Diss., 1997
    HBZ-ID HT008402133
    Database Catalogue ZB MED Medicine, Health

    Kategorien

  8. Article ; Online: Performance Analysis of Relative GPS Positioning for Low-Cost Receiver-Equipped Agricultural Rovers.

    Carvalho, Gustavo S / Silva, Felipe O / Pacheco, Marcus Vinicius O / Campos, Gleydson A O

    Sensors (Basel, Switzerland)

    2023  Volume 23, Issue 21

    Abstract: Global navigation satellite systems (GNSSs) became an integral part of all aspects of our lives, whether for positioning, navigation, or timing services. These systems are central to a range of applications including road, aviation, maritime, and ... ...

    Abstract Global navigation satellite systems (GNSSs) became an integral part of all aspects of our lives, whether for positioning, navigation, or timing services. These systems are central to a range of applications including road, aviation, maritime, and location-based services, agriculture, and surveying. The Global Positioning System (GPS) Standard Position Service (SPS) provides position accuracy up to 10 m. However, some modern-day applications, such as precision agriculture (PA), smart farms, and Agriculture 4.0, have demanded navigation technologies able to provide more accurate positioning at a low cost, especially for vehicle guidance and variable rate technology purposes. The Society of Automotive Engineers (SAE), for instance, through its standard J2945 defines a maximum of 1.5 m of horizontal positioning error at 68% probability (1σ), aiming at terrestrial vehicle-to-vehicle (V2V) applications. GPS position accuracy may be improved by addressing the common-mode errors contained in its observables, and relative GNSS (RGNSS) is a well-known technique for overcoming this issue. This paper builds upon previous research conducted by the authors and investigates the sensitivity of the position estimation accuracy of low-cost receiver-equipped agricultural rovers as a function of two degradation factors that RGNSS is susceptible to: communication failures and baseline distances between GPS receivers. The extended Kalman filter (EKF) approach is used for position estimation, based on which we show that it is possible to achieve 1.5 m horizontal accuracy at 68% probability (1σ) for communication failures up to 3000 s and baseline separation of around 1500 km. Experimental data from the Brazilian Network for Continuous Monitoring of GNSS (RBMC) and a moving agricultural rover equipped with a low-cost GPS receiver are used to validate the analysis.
    Language English
    Publishing date 2023-10-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s23218835
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Error Analysis of Accelerometer- and Magnetometer-Based Stationary Alignment.

    Silva, Felipe O / Paiva, Lucas P S / Carvalho, Gustavo S

    Sensors (Basel, Switzerland)

    2021  Volume 21, Issue 6

    Abstract: This paper revisits the stationary attitude initialization problem, i.e., the stationary alignment, of Attitude and Heading Reference Systems (AHRSs). A detailed and comprehensive error analysis is proposed for four of the most representative ... ...

    Abstract This paper revisits the stationary attitude initialization problem, i.e., the stationary alignment, of Attitude and Heading Reference Systems (AHRSs). A detailed and comprehensive error analysis is proposed for four of the most representative accelerometer- and magnetometer-based stationary attitude determination methods, namely, the Three-Axis Attitude Determination (TRIAD), the QUaternion ESTimator (QUEST), the Factored Quaternion Algorithm (FQA), and the Arc-TANgent (ATAN). For the purpose of the error analysis, constant biases in the accelerometer and magnetometer measurements are considered (encompassing, hence, the effect of hard-iron magnetism), in addition to systematic errors in the local gravity and Earth magnetic field models (flux density magnitude, declination angle, and inclination angle). The contributions of this paper are novel closed-form formulae for the residual errors (normality, orthogonality, and alignment errors) developed in the computed Direction Cosine Matrices (DCM). As a consequence, analytical insight is provided into the problem, allowing us to properly compare the performance of the investigated alignment formulations (in terms of ultimate accuracy), as well as to remove some misleading conclusions reported in previous works. The adequacy of the proposed error analysis is validated through simulation and experimental results.
    MeSH term(s) Accelerometry/standards ; Algorithms ; Computer Simulation ; Gravitation ; Humans ; Magnetometry/standards
    Language English
    Publishing date 2021-03-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s21062040
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: Minilaparoscopic CLIPLESS Cholecystectomy: Tips, Tricks and Advanced Maneuvers.

    Carvalho, Gustavo L / Paquentin, Eduardo Moreno / Diaz, Roberto Gallardo / Rao, Prashanth

    Surgical technology international

    2022  Volume 41

    Abstract: As the world sought the 'Holy Grail' of scarless surgery, minimizing access seemed to be the natural path to follow, and minilaparoscopy (MINI) was considered to be a natural advancement of standard laparoscopy. It aims at minimizing surgical trauma by ... ...

    Abstract As the world sought the 'Holy Grail' of scarless surgery, minimizing access seemed to be the natural path to follow, and minilaparoscopy (MINI) was considered to be a natural advancement of standard laparoscopy. It aims at minimizing surgical trauma by further reducing the diameter of standard instruments, without compromising range of motion, triangulation or safety. Several different terms have been coined to address this sophisticated reduced-port technique, which is characterized by the use of instruments 3 mm or less in diameter: acuscopic surgery, minilaparoscopy, needlescopic surgery and microlaparoscopy. The early adoption of MINI was mostly inhibited by the limitations of first-generation instruments, especially with respect to functionality, cost and durability. Furthermore, mini cholecystectomy demanded the use of mini optics, which suffered from poor imaging quality and a short lifetime of the scopes. Newer-generation mini instruments have mitigated these issues through the use of improved effector tips, better insulation, strength and durability, and superior optics. During the early MINI years, surgeons clipped most structures, but sturdy mini clip appliers were either unavailable or did not hold the requisite-size clips. Clipping with MINI required the use of a standard clip applier and the scope had to be changed several times during a procedure, making MINI not only more complicated but also boring and time-consuming. The development and popularization of the clipless technique allowed the surgeon to get free from the expensive and cumbersome minilaparoscopic clip appliers, and replace clips with knots. The marked improvements in instrumentation and the development of the clipless technique have occurred simultaneously with the development of NOTES, LESS and Robotic surgery, which may have contributed to a greater push towards MINI. MINI has been proven to offer more than just better cosmesis. Other advantages include better visualization of the surgical field and, with the development of precisely engineered low-friction trocars, which enhance surgical precision during dynamic and delicate tasks (knotting and suturing small structures), less stress and higher efficiency, which makes the procedure easier to perform. Furthermore, transmission of electro cautery through mini instruments has led to less lateral spread of electric current and subsequent less tissue trauma. For more than 20 years, our team has successfully used minilaparoscopy. Even with the rising popularity of robotic surgery, which still uses 8 mm instruments, minilaparoscopy remains an attractive option that is far from becoming obsolete.
    Language English
    Publishing date 2022-10-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1225512-9
    ISSN 1090-3941
    ISSN 1090-3941
    DOI 10.52198/22.STI.41.GS1603
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top