Transformable structures in architecture can adapt their shape or function offering dynamic answers to modern problems, such as deployement for creating temporary spaces, responsiveness to climatic ...influences and change of use, in a society which embraces the concept of sustainable design. Depending on how the transformation is carried out, transformable structures can be deployable or demountable, as a kit-parts system. According to their structural system, deployable structures can also be classified in four main groups: spatial bar structures; foldable plate structures; tensegrity structures; and membrane structures. In this paper, a review on the deployable structures based on foldable plate structures will be done.
Transformable structures in architecture have the ability to change morphology and readjust in response to varying conditions and needs that can include changing environment and climatic conditions, ...different functional requirements and emergency situations. Depending on how the transformation is carried out, transformable structures can be deployable or demountable, as a kit-parts system. Deployable structures can also be classified in four main groups: spatial bar structures consisting of hinged bars; foldable plate structures consisting of hinged plates; tensegrity structures; and membrane structures. In this paper, a review on the deployable structures based on rigid bar mechanisms will be performed.
Transformable structures in architecture can change their shape or function in response to varying climatic conditions, changing environment and needs for different functional requirements or to ...emergency situations. Depending on how the transformation is doing, transformable structures can be deployable or demountable, as a kit-parts system. Deployable structures can also be divided in four main groups: spatial bar structures; foldable plate structures; tensegrity structures; and membrane structures. In this paper, some planar bar mechanisms proposed by Ten Fold Engineering company, which can be integrated in deployable structures, will be discussed.
Deployable structures have the ability to change their shape and volume, being used to design mobile structures with various applications in architecture. Planar or spatial mechanisms with ...articulated bars, folding plates or membranes could be used to realize such structures. In this paper, dimensional synthesis and simulation of two deployable structures based on a modified scissor mechanism will be presented.
Deployable structures can change their shape and volume in order to dynamic answering to changing needs. Depending on how the transformation is doing, transformable structures can be deployable or ...demountable, as a kit-parts system. These structures can be classified in four main groups: structures based on spatial articulated bar mechanisms; foldable plate structures; tensegrity structures; and membrane structures. In this paper, some general geometric design aspects of deployable bar structures are discussed and some translational bar mechanisms for deployable structures are proposed. More results on the geometric design, dimensional synthesis and simulation of these scissor structural mechanisms will be presented in future work.
Research in deployable structures increased in the last decade, due to the need of building structures that can change their shape or functionality in response to varying of different aspects: ...climatic conditions, environment, functional requirements or emergency situations. Depending on how the transformation is doing, transformable structures can be deployable or demountable, as a kit-parts system. These structures can be classified in four main groups: structures based on spatial articulated bar mechanisms; foldable plate structures; tensegrity structures; and membrane structures. In this paper, some geometric design aspects of curvilinear bar mechanisms are discussed and a curvilinear structure mechanism is proposed. More results on the geometric design, dimensional synthesis and simulation of this scissor structural mechanism will be presented in future work.
Agricultural robot for small farms Morar, C A; Doroftei, I A; Doroftei, I ...
IOP conference series. Materials Science and Engineering,
12/2020, Letnik:
997, Številka:
1
Journal Article
Recenzirano
Odprti dostop
This paper presents a new concept of the robots dedicated to small farming activities. A walking robot is remote controlled in order to perform agricultural operations in small farms or peasant ...household. The robot should perform all operations during crop development respectively tilling seeding, fertilization, harvesting, etc. The robot structure is conceived in order to achieve low energy consumption criteria by gravitational decupling and static gait. The power of the robot is calculated robot power is calculated by reference to the power of a man or a horse. The purpose of this work is to approach some aspects of a robot according with the requirements of work environments: energy consumption, influence to the environment, the proper locomotion method, etc.
In this paper we aim to present an evolution of the development of robotic end effectors with applications in fruit and vegetable harvesting but without exhaustively covering all technical solutions. ...This study is focused on robotic final effectors dedicated to harvesting fruits that have reached an advanced stage of development for apples, tomatoes, sweet peppers and cucumbers. The performances of these final effectors (harvesting speed, success rate, costs, etc.) are compared with the performances of human operators and we could say that so far the robots fail to reach the efficiency of human operators in the harvesting processes. The success rate is below 90% and the harvest times are longer than 10 seconds and this means a low efficiency. Although the level of commercial robots for fruit harvesting has not been reached, technological developments indicate an improvement in the performance of this category of robots, an increasing number of research projects are focused on tomato and apple harvesting technologies.
A controversy persists over whether or not the type of embryo transfer (ET) influences reproductive outcomes. This study aimed to evaluate the reproductive outcomes of pregnant patients undergoing ...their first in vitro fertilization procedure and explore the influence of various KIR genotypes on these reproductive outcomes.
Prospective enrollment of patients with infertility who sought treatment at Origyn Fertility Center in Iasi, Romania, was conducted between January 2019 and March 2023. Descriptive statistics and average treatment effects (ATE) using propensity-score matching were employed to analyze our data.
Our results indicated that both groups were homogenous regarding baseline characteristics. When we evaluated the ATE of fresh vs. frozen ET on the main outcomes, we discovered that only frozen ET significantly improved the pregnancy rates (ATE: 0.17, 95% CI: 0.04-0.30, p=0.011) and live birth rates (ATE: 0.36, 95% CI: 0.02-1.19, p=0.03). The miscarriage rates were similar between the two groups. None of the evaluated KIR genotypes had a significant influence on the ATE corresponding to fresh and frozen ET.
KIR screening is not necessary before an IVF cycle, except for specific situations such as recurrent pregnancy loss or recurrent implantation failure.
The purpose of this study is to present the preliminary steps in facial expressions recognition with a new version of an expressive social robotic head. So, in a first phase, our main goal was to ...reach a minimum level of emotional expressiveness in order to obtain nonverbal communication between the robot and human by building six basic facial expressions. To evaluate the facial expressions, the robot was used in some preliminary user studies, among children and adults.
PDF
