Introduction . Tonsillectomy performed by a variety of techniques such as laser bipolor and monopolar electrodissetion and blunt dissection (classic method). Serious and lethal post operative complications secondary to tonsillectomy are related to bleeding and anesthesia. For this reason we have introduced a modified form of electrodissection tonsillectomy using bipolor SCISSOR diathermy to compare the morbidities with classic method. Methods. One hundered patients (2 to 30 years old) candidate for tonsillectomy, were entered in a randomized controlled clinical trial to compare the post tonsillectomy morbidities. Fifty patients were operated with bipolar electrosurgical SCISSOR and fifty patients with classic method. This study was performed in Kashani and Alzahra medical centers of Isfahan University. Patients with a positive history of bleeding tendency and tonsillectomy performed because of tonsillar cancer or uppp. uvulopalato pharyngoplasty) were excluded. Re suits. Bipolar electrosurgical SCISSOR tonsillectomy significantly reduce intraoperative bleeding (3.1±4.5 mL) in comparison to classic method (70±30.61 mL) (P<0.001). No bleeding Dccurs in 24 hours and 10 day after operation in both methods. Mean of pain intensity in both methods, was similar. Mean time of ability for fluid Swallawing after bipolar method was lesser than classic method (3/4±1/47 h VS 4±1/69 h) (P>0.05). Bipolar tonsillectomy siqnificantly reduces the time of operation and anesthesia (7.3±2.76 min VS 11.5±3.29 min) (P<0.001). Only 4 percent of electrodissection qroup and 70 percent of classic group was required to suturing in tonsillar bed (P<0.001). Delayed otalgia in electrosurgical grbup was greater than classic group. Discussion. The most common cause of death in tonsillectomy is bleeding and anesthetic complication. We believe the bipolar electrosurgical tonsillectomy result in significantly reduce intraoperative blood loss and time of operation and .lesser need to sutring of tonsillor bed. Thus if we can reduce the post operotive otalgia in electrodissection method, this method will be the best technique of tonsillectomy in future.

 In this article, we suggested a three-photon quantum SCISSOR that truncates all multiphoton number states with four or more photons and amplifies the remaining photon number states in a probabilistic way. To this end, by assuming the ideality of all beam splitters and detectors of the proposed scheme, the output state of this quantum SCISSOR and its success probability have been derived analytically. In contrast to the one-photon or two-photon quantum SCISSOR, this setup works perfectly for superpositions of up to three photons. For the input coherent state, our results show that the fidelity between ideal amplification and the amplification obtained by this suggested three-photon quantum SCISSOR is as good as that obtained with a network of six one-photon or two two-photon amplifiers. Moreover, the success probability of this generalized quantum SCISSOR is larger than the success probability of six one-photon amplifiers and is comparable to the success probability of two two-photon amplifiers. Therefore, based on the fact that the resources required by the three-photon amplifier are smaller than those required for a network of one-photon or two-photon amplifiers, this proposed device is much more efficient than several one-photon or two two-photon amplifiers.

In this paper, a new strategy for developing effective control policies suitable for guiding the motion of articulated mechanical systems that are described within the framework of multibody system dynamics is proposed. In particular, a SCISSOR lift table having a pantograph topology is analytically modeled as a rigid multibody system by using a Lagrangian formulation. An operational approach is thus introduced in this investigation to design the control system that commands the motion of the lift table. In this vein, two dynamical models are developed in this investigation, namely a minimal coordinate multibody model and a redundant coordinate multibody model. While the minimal coordinate multibody model is used in the paper for the optimal design of a high-performing nonlinear controller, the redundant coordinate multibody model is employed to verify both the efficiency and the effectiveness of the control approach adopted in this work. More specifically, the nonlinear control system devised in this paper is based on the combination of an open-loop control architecture with a closed-loop control strategy. The open-loop control policy is determined by using a nonlinear quasi-static feedforward controller, whereas the closed-loop control action is obtained considering an error-based proportional-derivative feedback controller. With the use of both the pantograph SCISSOR lift multibody models developed in this work, several numerical experiments are carried out in the paper, thereby demonstrating the readiness and the effectiveness of the control methodology proposed in this investigation.

Foldable-deployable Structures are often used as emergency and temporary shelters after disasters or earthquakes. In this paper, generation of foldable structures with SCISSOR-like elements is formulated for various shapes with no geometric limitations. Non-linear analyses are performed and compared for designing foldable structures. The optimum height to span ratio is obtained for barrel vault type of foldable structures. Geometric instability of low height barrel vaults, are also investigated by finding buckling loads.

In this article the genetic algorithm is employed to optimize SCISSOR-link foldable structures. The Advantage of using GA lies in the fact that the discrete spaces can be optimized without any Complexity. Here displacement method is used for analysis with uniplet elements.      

Extended Abstract Background and Objectives: The aim of this study is to explore the design, construction, and control of adaptive free-form shading structures that can react to changes in light levels. The focus is on developing a transformable SCISSOR-like structure capable of changing geometry to achieve controlled forms. The key objective is to create an adaptive shading device for a specific courtyard, considering factors such as human interaction, relaxation, and optimal shading conditions. Methods: The study employed a parametric design approach, utilizing digital tools such as Rhino software and Grasshopper plugin. The design process involved identifying influential environmental factors, defining control objectives, and simulating daylight receiving conditions using the Ladybug plugin. Different forms with varying support points were proposed and evaluated based on aesthetics, shading levels, and site constraints. In this method, the desired free-form surface is initially drawn. Then, the Iso-curves of the surface are extracted along the horizontal and vertical directions to obtain a mesh network of the surface. This mesh network is transformed into a three-dimensional spatial mesh structure, and finally, all the lines of this network are converted into SCISSOR-like modules. It is worth noting that besides using horizontal and vertical Iso-curves, it is also possible to extract inclined, triangular, pentagonal, and multi-sided networks from the free-form surface. Through this approach, various double-layer networks with diverse multi-sided modules can be transformed into SCISSOR-like structures. In the next step, special connections, including rod connections within each SCISSOR-like unit and connections between neighboring units, were designed and labeled for laser cut wood. Control connections were introduced to enable deformation within the fixed span of the structure. The modified SCISSOR-like element model by Akgun was utilized, allowing individual substructures to change independently. Arduino, a microcomputer chip, has gained considerable interest in architecture because of its user-friendly nature and its ability to work seamlessly with a range of sensors and controllers. It facilitates the creation of smart devices by taking input from sensors and switches and producing diverse responses, like modifying light levels, adjusting motor speeds, and controlling other outputs. Arduino can function autonomously or be linked to a computer, and it can be programmed using software such as Arduino’s own IDE or the Grasshopper plugin in Rhino. In terms of controllers, there are various options available, including pneumatic jacks, shape-changing smart materials like shape memory alloys, piezoelectric elements, and electromechanical motors. Servo motors, in particular, are commonly used controllers, especially in small-scale model-making, as they can create rotational motion based on the input voltage received from microcontrollers. Findings: Through simulations and analysis, it was found that among the alternatives mentioned in this article, a three-support-point canopy offered the most favorable inactive option, delivering the desired shading conditions for more hours throughout the year. This finding validated the effectiveness of the proposed design approach and highlighted the potential for achieving passive shading without relying heavily on active control. The laboratory-scale prototype demonstrated the feasibility of the adaptive shading model. Sixteen servo motors were connected to eight corrective units, allowing for changes in the angle between rods and structural deformation. Light sensors, Arduino kits, and a closed-loop control system facilitated the processing of sensor data and commanded the servo motors. The prototype successfully achieved controlled structural deformation in response to the presence or absence of sunlight. Conclusion: The study presented a comprehensive framework for the design, simulation, and construction of adaptive and controllable free-form SCISSOR-like structures. The research showcased the potential of digital architecture and embedded systems in creating dynamic and responsive solutions. By combining sensors, central processing units, and controllers, the suggested design for a shading system allowed for the adjustment of its shape in response to environmental conditions, particularly the movement of sunlight. The findings underscored the significance of considering both passive and active design strategies. While passive geometry and form optimization played a crucial role in achieving desired shading, active control mechanisms provided flexibility and adaptability to changing conditions. The study emphasized the importance of carefully selecting the form, placement of corrective modules, and incorporating various sensors to enhance the capabilities of such structures. In conclusion, this research contributes to the growing field of digital architecture by providing insights into the design and implementation of adaptive shading device. The proposed framework and the laboratory-scale prototype demonstrate the potential for creating adaptive and responsive architectural solutions that seamlessly integrate with their surrounding environment. Future research can explore additional sensors, materials, and control strategies to further enhance the adaptability and functionality of such structures in diverse architectural contexts.

Background: Gluteal artery pseudo aneurysm (GAP) is a rare entity, as gluteal arteries are well protected under muscles and fat of gluteal region. Gluteal artery aneurysms constitute less than 1% of all aneurysms and most of them are pseudo aneurysms. The common etiologies of GAP areblunt or penetrating trauma to gluteal region, infection, fractures of the pelvis or iatrogenic injury during surgical procedures on the pelvis or hips to intramuscular injection. The usual presentation is a pulsatile gluteal mass often confused with a gluteal abscess presenting 1-2 months after injury. However, at times it can cause symptoms due to compression of pelvic structures.Case Report: Our patient was a young boy who had injury to his right gluteal region with a tailoring SCISSOR during a scuffle. He presented to casualty in shock with packing of wound done outside. After resuscitation his Computed tomographic angiography (CT angiography) revealed a psuedoanuerysm of inferior gluteal artery. He was immediately taken up for surgery a transperitoneal ligation of internal iliac artery of the involved side was done along with exploration of the gluteal wound.Conclusion: These patients of Gluteal artery aneurysms can be managed with both open and endovascular techniques. Our patient was unique in the respect that no GAP has been reported after stab injury with a tailoring SCISSOR and ours is first case report in English literature .We want that the surgeons should keep in mind the possibility of GAP while dealing with even trivial injuries of gluteal region.

This study investigates the effect of coherent state superposition on quantum SCISSORs. The SCISSOR is subjected to ideal single-photon, vacuum state, and superpositions of coherent states as incident fields. Detectors are employed to measure single photons and zero photons, resulting in a superposition state of single-photon and vacuum states at the output. The study calculates the SCISSOR's probability of success, amplification factor, fidelity, and efficiency factor. The probability of success depends on the coherent field's amplitude, incident field phase, and transmission coefficients of the beam splitters. The maximum probability of success reaches 25%, attributed to even coherent state superpositions. Quantum SCISSORs demonstrate the capability to amplify states under specific conditions. Results indicate maximum amplification when the incident field phase approximates π. Besides amplification, this phase significantly influences the distribution of zero and single-photon states in the superposition output. Thus, altering the incident field phase or beam splitter transmission can modify this distribution. For a fixed incident field intensity, closer proximity of the incident phase to π correlates with reduced SCISSOR efficiency. These findings underscore how quantum SCISSORs can characterize coherent state superpositions due to their sensitivity to incident state characteristics.

Flexibility is a concept associated with variable needs of human beings. Today transformable structures are used to meet human changeable demands with different purposes and functions such as facades, roofs, sunshades, etc. A Flexible structure must be able to change physically and adapt to predetermined conditions. To provide flexibility and adaptability, transformable systems are required to possess appropriate covering and a proper mechanism. Given their high elasticity, membranes can be considered as the first and easiest solution, but not necessarily the best one, for such deployable structures as they may interfere with the function of the structure; so that the use of membranes in deployable structures often leads to functional, operational and visual problems which indicate the necessity of application and investigations into rigid covers for such structures. Aimed at finding a new solution to improve flexibility of transformable structures with rigid covers, this paper attempts to evaluate and assess a variety of coverings suitable for the structure proposed in this research. Being widely used, suiting various functions and having capability of design in different forms, SCISSOR-like structures are chosen among other types of transformable systems and a design is proposed for rigid cover of SCISSOR-hinged transformable domes. The solution for adding rigid covering involves adding additional kinetic elements to the SCISSOR-like structure. Reciprocal elements, are connected to the structure in two directions, on which rigid covers are installed. One of the advantages of this proposal is that the elements are designed in such a way that rigid covers can be installed through various forms and configurations of modules.

In Iran, a special kind of connection, named Khorjini connection, is common in steel structures. Despite their widespread use, the performance of these connections against dynamic loads is not satisfactory. Hence, in the recent decades various researches have been conducted in this area with the aim of understanding and enhancing the behavior of these connections. In this paper an improved version of this connection with peripheral angles has been introduced and compared with the state of the art in this area. Furthermore, it has been shown that the proposed connection, with a relatively simpler detail, could be acknowledged countrywide as an advantageous connection.