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Journal articles on the topic 'Open and closed method'

Author: Grafiati

Published: 7 June 2025

Last updated: 16 July 2025

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1

L, Srinivas, and Hemanth G. "Clinical Evaluation of Outcome of Open and Closed Haemorrhoidectomy." International Journal of Pharmaceutical and Clinical Research 15, no. 6 (2023): 1785–92. https://doi.org/10.5281/zenodo.12516601.

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<strong>Background: </strong>Hemorrhoids are a very common problem affecting a large group of the population. Milligan-Morgan excision haemorrhoidectomy continues to be widely used as a treatment option for third- and fourth-degree hemorrhoids. On the other hand, Ferguson haemorrhoidectomy is thought to cause less postoperative pain due to its closed wound nature. The objective of this study was to compare the outcome of the two conventional methods of hemorrhoidectomy open and close for third-degree prolapse and complicated hemorrhoids. <strong>Methods: </strong>Patients who me

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Himanshu, Kumar Choudhary, Kumari Sujata, Kumar Subhash, and Kumari Sushma. "Open Versus Closed Lateral Internal Sphincterotomy in Chronic Anal Fissures: A comparative study." International Journal of Pharmaceutical and Clinical Research 16, no. 9 (2024): 781–84. https://doi.org/10.5281/zenodo.13908947.

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<strong>Background:</strong> Fissure-in-ano is a very common anal disorder which predominantly presents with severe pain. Lateral internal sphincterotomy remains the main treatment modality. This may be performed using open or closed method, each with their attendant complications. Aim of this study to evaluate the outcomes of open lateral internal sphincterotomy and closed lateral internal sphincterotomy with a cataract knife in terms of operation time, postoperative pain, faecal and flatus incontinence, and hospital stay. <strong>Methods:</strong> A total of 100 patients with

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Roshani, Prasad, Raj Sumit, Singh Lallan, and Rai Ashok. "Assessment of Open versus Closed Method of Establishment of Pneumoperitoneum in Laparoscopic Surgery: Prospective Comparative Parallel Randomized Trial." International Journal of Pharmaceutical and Clinical Research 14, no. 8 (2022): 505–10. https://doi.org/10.5281/zenodo.13356924.

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<strong>Aim: </strong>To compare open or Hasson’s method and closed or Veress method of creation of pneumoperitoneum. <strong>Material & Methods: </strong>This was a prospective comparative parallel randomized control trial with an allocation ratio of 1:1. The study was conducted at the Department of Surgery, over a period of one year and included all the patients (n=160) who were undergoing laparoscopic surgery in this time period at our department. <strong>Results: </strong>The mean time required to create pneumoperitoneum by closed method (group C) was 9.0

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Prem, Prakash, Kumar Rao Sanjay, and Narayan Rajesh. "In Laparoscopic Surgery, a Comparative Study of the Open vs Closed Approach of Pneumoperitoneum Generation." International Journal of Pharmaceutical and Clinical Research 13, no. 6 (2021): 520–25. https://doi.org/10.5281/zenodo.14219865.

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<strong>Aim:</strong> A comparative study of the open versus closed method of pneumoperitoneum creation in laparoscopic surgery. <strong>Methods: </strong>This comparative study conducted in multiple institutes of Bihar, India, for 12 months. 100 patients of either sex were selected who undergone operative procedure for laparoscopy surgery were included in this study. The patients were diagnosed on the basis of clinical symptoms, physical examination and haematological as well as radiological investigations. All patients undergoing elective laparoscopic surgery and hemodynamical

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Jiang, Ruijian, Yi Liu, and Xiangjun Wang. "Simulation analysis of open and closed air gap of open and closed magnetic core." Journal of Physics: Conference Series 3000, no. 1 (2025): 012041. https://doi.org/10.1088/1742-6596/3000/1/012041.

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Abstract The magnetic core is the core of the fluxgate current sensor. In order to better analyze the effect of magnetic field bias on the hysteresis curve of the magnetic core caused by the measurement current of the fluxgate probe, a DC magnetic bias correction is carried out on the basis of the J-A model, and numerical simulations are performed to calculate the correction model. In order to improve the saturation and agglomeration performance of air-gap cores, four kinds of opening and closing structures are designed, which provide an optimization method for the design of the opening and cl

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ElGohary, Hatem. "Semi-Closed Method as Alternative to Open and Closed Methods for the Treatment of Pilonidal Sinus Disease." Ain Shams Journal of Surgery 17, no. 2 (2017): 188–92. http://dx.doi.org/10.21608/asjs.2017.178399.

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Tailor, Anandkumar Sureshbhai, Kamaleshkumar A. Patel, Patel Kishan Manoj Kumar, Avi Paras Rangwala, and Vijay Patel. "Analysis between Open Method and Closed Method of Reduction in Intra-articular Joint Depression Type of Calcaneal Fractures." SSR Institute of International Journal of Life Sciences 10, no. 4 (2024): 6044–50. http://dx.doi.org/10.21276/ssr-iijls.2024.10.4.39.

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Shanmugaiah, Anand, and Saravanan Pandian. "Prospective Randomized Study between Open Vs Closed Lateral Anal Internal Sphincterotomy in Patients with Chronic Fissure in Ano." Academia Journal of Surgery 3, no. 1 (2020): 167–71. http://dx.doi.org/10.47008/ajs/2020.3.1.36.

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Background: One of the the most common cause of pain during defecationin young patientsis chronic fissure in ano. Surgical treatment of choice for chronic fissure in ano is internal sphincterotomy. This procedure can be performed by open or closed method. The aim of the study was to compare the closed and open anal internal sphincterotomy in patients admitted in our hospital with chronic anal fissure. Subjects and Methods: 105 patients admitted in department of general surgery with chronic fissure in ano were divided into two groups. 50 patients (Group A) who were treated by closed method and

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Duncavage, James A., Robert H. Ossoff, and Jay A. Werkhave. "Laryngotracheal Stenosis: Open and Closed Methods." Otolaryngology–Head and Neck Surgery 112, no. 5 (1995): P61. http://dx.doi.org/10.1016/s0194-5998(05)80127-5.

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ÖZSOY, S., and K. ALTUNATMAZ. "Treatment of extremity fractures in dogs using external fixators with closed reduction and limited open approach." Veterinární Medicína 48, No. 5 (2012): 133–40. http://dx.doi.org/10.17221/5760-vetmed.

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Humerus, tibia and antebrachium fractures determined in 30 dogs of different breed, age, weight and gender were treated using Type I and II external fixators. Meynard and handcuff clamps were used in the external fixators. Limited open approach was applied in 6 of the cases and closed reduction techniques in 24. In cases where closed reduction and stabilisation was done, the patients were seen to use their leg within 3&ndash;10 days post-operatively and that walking was reasonably good after 20 days. In cases to which a limited open approach had been applied, use of leg was achieved in a p

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Janský, Vojtěch, Zdeněk Hejda, Daniel Duda, Vitalii Yanovych, and Václav Uruba. "Vortices in the wake past adjustable car spoiler in open and closed configuration studied experimentally by PIV." Acta Polytechnica 65, no. 3 (2025): 288–95. https://doi.org/10.14311/ap.2025.65.0288.

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A complex adjustable car spoiler opens or closes in dependence on ride properties: the closed state increases negative lift (better for curves), while the open state ensures lower drag (better for straight segments of the road). Both these configurations are studied by using Particle Image Velocimetry method in a wind tunnel at model scale. The three measured planes are perpendicular to the main flow. The wake is characterised by upwind (stronger past the closed variant) and by a pair of wing-tip vortices, although the spoiler wing has no end, it is rounded downwards instead. These vortices ar

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Sutradhar, Bibek Chandra, Sreekanta Biswas, Sabiha Zarin Tasnim Bristi, et al. "Semi-open Herniorrhaphy Reduces Postoperative Complications of Umbilical Hernia in Male Calves." European Journal of Veterinary Medicine 3, no. 1 (2023): 22–27. http://dx.doi.org/10.24018/ejvetmed.2023.3.1.45.

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Umbilical hernia is the most common birth defect in calves, especially in the male. The aim of this study was to justify the semi-open herniorrhaphy compared with other techniques for the treatment of umbilical hernia in male calves. This research included 54 clinical cases of reducible umbilical hernia (11 indigenous, 43 crossbred calves). The ages of 54 calves ranged from less than 1 month to 6 months. Sizes of the hernial ring ranged from 2-6 cm. Out of the 54 hernias, 20 were treated with open herniorrhaphy, 16 with closed herniorrhaphy, and 18 with semi-open herniorrhaphy. Among the three

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Lavezzi, Giovanni, and Marco Ciarcià. "Hybrid Open/Closed-Loop Attitude Control Method for Imaging Satellites." Journal of Aerospace Engineering 34, no. 5 (2021): 04021067. http://dx.doi.org/10.1061/(asce)as.1943-5525.0001293.

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Muhammad, Rashid, Dost Mohammad Sohu, Zamir Ahmed Soomro, et al. "Comparison of Efficacy between Open and Close Reduction in Supracondylar Fracture of Humerus in Children Using Flynn’s Criteria." Pakistan Journal of Medical & Health Sciences 16, no. 10 (2022): 345–47. http://dx.doi.org/10.53350/pjmhs221610345.

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Objective: To compare the efficacy between open and close reduction in supracondylar fracture of humerus in children using Flynn’s criteria. Study Design: Randomized control trial. Place and Duration of Study: Department of Orthopaedic Surgery, Chandka Medical College Hospital, Larkana from 1st April 2019 to 31st March 2022. Methodology: One hundred patients were enrolled and divided into two groups (open reduction and closed reduction groups). Each group had 50 patients. Fracture-fragments which were reduced through open reduction protocol or closed reduction were operated under highly standa

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Baruah, A., N. Topno, S. Ghosh, et al. "A Study of the Safety and Morbidity Profile of Closed versus Open Technique of Laparoscopic Primary Peritoneal Access Port in Patients Undergoing Routine Laparoscopic Cholecystectomy at a Tertiary Care Hospital in Northeastern India." Minimally Invasive Surgery 2022 (July 12, 2022): 1–5. http://dx.doi.org/10.1155/2022/1017551.

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Introduction. Laparoscopic cholecystectomy (LC) is the gold standard operation for gallstone disease. Primary port placement into the abdomen is a blind procedure and is challenging with chances of unforeseen complications. The complication rate has remained the same during the past 25 years. Both closed/Veress and open/Hasson’s techniques are commonly employed and have their typical indications for use. Materials and Methods. This prospective study was carried out in the Department of General Surgery, North Eastern Indira Gandhi Regional Institute of Health and Medical Sciences (NEIGRIHMS), S

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Gleason, E., S. Grossman, and C. Campbell. "Minimizing diagnostic blood loss in critically ill patients." American Journal of Critical Care 1, no. 1 (1992): 85–90. http://dx.doi.org/10.4037/ajcc1992.1.1.85.

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BACKGROUND: Blood loss from diagnostic procedures in critically ill patients needs to be minimized. Traditionally, when drawing blood from arterial lines, the initial sample used to clear the line has been discarded (open method). Use of a temporary reservoir enables this discard sample to be returned to the patient (closed method). METHODS: Critically ill surgical patients were prospectively randomized to the open or closed method of drawing blood from arterial lines. Blood loss to diagnostic sampling was measured in both groups. RESULTS: A comparison study (n = 1657) of these two methods rev

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Salnan Irba Novaela Samur and Risma Novela Esti. "Egg Quality of Layer Hens Reared in Two Different Housing Systems." Bantara Journal of Animal Science 6, no. 2 (2024): 12–17. http://dx.doi.org/10.32585/bjas.v6i2.5353.

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This study aims to determine whether there is a significant difference in the quality of eggs from chickens raised in closed-house and open-house cages. This study was conducted in Close housed and house cages for Isa Brown strain layer chickens in the Blitar Regency area in May 2024. The materials used in this study were 40 eggs of 68-week-old Isa Brown strain chickens kept in closed houses and open houses. This research was conducted using an experimental quantitative method using an unpaired t-test, which was analyzed using the Microsoft Excel application. The results showed that the egg we

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N.Al-Asadi,, R., and S. I. Salih. "A COPARATIVE STUDY OF CASTRATION IN PIGS." Iraqi Journal of Veterinary Medicine 16, no. 1 (1992): 136–45. http://dx.doi.org/10.30539/ijvm.v16i1.1620.

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Castration was performed on 46 pigs aged between (2-8) months using open and closed methods under the effect of local and general anaesthesia .Secondary complication includes bleeding, odema and peritonitis occured in seven cases when using open method while the remaining animals healed by first intenstion. only. In closed method, secondary complication was observed in one animal  The results of the present study indicated the preference of using closed method castration in pigs.

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Ashutosh, Kumar Singh, Kumar Lalan, and Narayan Rajesh. "A Prospective Study to Compare Open and Closed Method of Drainage of Breast Absces." International Journal of Current Pharmaceutical Review and Research 16, no. 01 (2024): 172–76. https://doi.org/10.5281/zenodo.11001200.

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AbstractAim: The aim of the present study was to compare open versus closed modalities of treatment of breast abscessand to isolate the commonest organism responsible for breast abscess.Methods: A prospective study was designed to compare the breast abscess cases (both open and closed) admittedin Department of Surgery for the period of two years. Total 100 cases were selected for the study and divided intotwo groups, the open group and the closed group.Results: Maximum no. of cases i.e. 60 (60%) were observed in the 15-25 yrs of age group followed by patientsmore than 26-35 years (20%). In the

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Ahn, Tae-In, and Jung-Eek Son. "Application of an Alternative Nutrient Replenishment Method to Electrical Conductivity-Based Closed-Loop Soilless Cultures of Sweet Peppers." Horticulturae 8, no. 4 (2022): 295. http://dx.doi.org/10.3390/horticulturae8040295.

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The nutrient replenishment method primarily impacts the nutrient variations in a closed-loop soilless culture system. However, there is still a lack of systematic approaches for the effective way of nutrient replenishment. Our previous study theoretically derived and experimentally validated an alternative nutrient replenishment method expecting synchronized total fertilizer supply to total nutrient absorption by crops and lower concentration fluctuations than conventional methods. However, no individual nutrient management has been performed. The objective of this study was to apply individua

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DU, HONGYUE. "ADAPTIVE OPEN-PLUS-CLOSED-LOOP CONTROL METHOD OF MODIFIED FUNCTION PROJECTIVE SYNCHRONIZATION IN COMPLEX NETWORKS." International Journal of Modern Physics C 22, no. 12 (2011): 1393–407. http://dx.doi.org/10.1142/s0129183111016956.

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This paper investigates the modified function projective synchronization (MFPS) in drive-response dynamical networks (DRDNs) with different nodes, which means that systems in nodes are strictly different. An adaptive open-plus-closed-loop (AOPCL) control method is proposed, which is a practically realizable method and can overcome the model mismatched to achieve synchronization. It is well known that each of the close-loop and open-loop control method possesses some advantages and disadvantages. By combining their advantages, the open-plus-closed-loop (OPCL) control method was proposed by Jack

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Abhishek, Sinha, Kumar Abhishek, and Kumari Puja. "A Prospective Comparative Observational Study to Evaluate Open versus Closed Method of Drainage of Breast Abscess." International Journal of Current Pharmaceutical Review and Research 16, no. 2 (2024): 281–85. https://doi.org/10.5281/zenodo.12739751.

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Aim : The aim of the present study was to compare open versus closed modalities of treatment of breast abscessand to isolate the commonest organism responsible for breast abscess.Methods : A cross sectional prospective study was designed to compare the breast abscess cases (both open andclosed) admitted in Department of Surgery, Netaji Subhas Medical College and Hospital, Bihta, Patna, Bihar,India for a period of 2 years. A total of 200 cases were selected for the study and divided into two groups - opengroup and closed group.Results : Maximum number of cases i.e. 120 (60%) were observed in th

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Abhishek, Sinha, Kumar Abhishek, and Kumari Puja. "A Prospective Comparative Observational Study to Evaluate Open versus Closed Method of Drainage of Breast Abscess." International Journal of Current Pharmaceutical Review and Research 16, no. 2 (2024): 281–85. https://doi.org/10.5281/zenodo.14928165.

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Aim : The aim of the present study was to compare open versus closed modalities of treatment of breast abscessand to isolate the commonest organism responsible for breast abscess.Methods : A cross sectional prospective study was designed to compare the breast abscess cases (both open andclosed) admitted in Department of Surgery, Netaji Subhas Medical College and Hospital, Bihta, Patna, Bihar,India for a period of 2 years. A total of 200 cases were selected for the study and divided into two groups - opengroup and closed group.Results : Maximum number of cases i.e. 120 (60%) were observed in th

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Lalit, Govind Vadher, and Jalu Uday. "Assessing Open versus Closed Techniques for Pneumoperitoneum Creation in Laparoscopic Surgery." International Journal of Pharmaceutical and Clinical Research 16, no. 11 (2024): 887–90. https://doi.org/10.5281/zenodo.14250877.

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<strong>Background and Aim: </strong>Research has consistently documented instances of visceral perforation across various studies employing both open and closed techniques. The condition is linked to a significant mortality rate, primarily because numerous injuries may go unrecognized during surgical procedures. This study was conducted to assess the effectiveness of open versus closed techniques for intraperitoneal access in creating pneumoperitoneum during laparoscopic surgery. <strong>Material and Methods: </strong>The study included all patients undergoing abdominal laparos

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Viastika, Yanita Mutiaraning. "Efisiensi Usaha Peternakan Ayam Broiler dengan Sistem Manajemen Closed House dan Open House." Eksis: Jurnal Ilmiah Ekonomi dan Bisnis 12, no. 1 (2021): 107. http://dx.doi.org/10.33087/eksis.v12i1.243.

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This study aims to identify the ratio of broiler farm business income with closed house and open house management systems. The research method used was a survey method using purposive sampling. As treatment there are two cage management systems, namely closed house and open house. The research method uses profit analysis and R / C ratio. The results showed that 1) the profit obtained by the broiler breeder business with the open house cage system was greater than that of the closed house. 2) the broiler chicken coop business that uses the open house and closed house systems is classified as ef

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Raman, Ohary, Kushwanshi Anil, and Sengar Shaily. "Complications and Mortality Patterns in Burn Patients: A Study of Open and Closed Dressings in General Ward and Burn Unit." International Journal of Pharmaceutical and Clinical Research 15, no. 5 (2023): 730–37. https://doi.org/10.5281/zenodo.12577638.

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<strong>Background:</strong> Burns caused by various sources such as friction, cold, heat, radiation, chemical, or electric sources. However, the majority of burn injuries are caused by heat from hot liquids, solids, or fire. Burn injuries are significant injuries that can result in substantial morbidity and mortality. <strong>Objective:</strong> The aim of this study was to investigate the complications and mortality patterns of burn patients with respect to open and closed dressing methods in a general ward or burn unit. <strong>Method:</strong> The study was conduct

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Makarov, Vladimir, Péter Kovacs, Samuel Dagmar, and Riccardo Paulman. "Technological Solutions for Processing Closed Coal Mines by Open Pit Method." E3S Web of Conferences 41 (2018): 01041. http://dx.doi.org/10.1051/e3sconf/20184101041.

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The main sources of environmental pollution are: pollution from the residual effects of working out of mine fields by underground method; pollution from secondary mining of mine fields by the open method. The pollution of the environment from the underground mining of mine fields is mainly due to the erosion of the surface of the ditches caused by collapse of the underground workings, spontaneous combustion of the remaining coal reserves and exit of poison gases SO2 and CO to the surface through the cracks from the lower horizons of the worked-out mine fields. This makes actual the research of

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Jansson, Magnus. "A NEW SUBSPACE IDENTIFICATION METHOD FOR OPEN AND CLOSED LOOP DATA." IFAC Proceedings Volumes 38, no. 1 (2005): 500–505. http://dx.doi.org/10.3182/20050703-6-cz-1902.00084.

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Chotai, Neet R., B. B. Choksi, Sushil Damor, and Amul Bhedi. "Intraperitoneal access by closed method (veress needle) versus open (Hasson’s) method in laparoscopic surgery to create pneumoperitoneum." International Surgery Journal 4, no. 8 (2017): 2786. http://dx.doi.org/10.18203/2349-2902.isj20173419.

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Background: Access into the abdomen is the one challenge of laparoscopy that is particular to the insertion of surgical instruments through small incisions. In the last three decades, rapid advances in laparoscopic surgery have made it an invaluable part of general surgery, but there remains no clear consensus as an on optimal method of entry into the peritoneal cavity. The objective of this study was to study the comparison and efficacy between closed (veress needle)and open method (Hasson’s) of intraperitoneal access to create pneumoperitoneum in laparoscopic surgeries.Methods: All patients

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Sheng, Zaiquan, and Kazuo Yamafuji. "A General Method for Direct Kinematic Equation Computation of Closed Link Mechanisms." Journal of Robotics and Mechatronics 6, no. 2 (1994): 169–74. http://dx.doi.org/10.20965/jrm.1994.p0169.

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This paper proposes a general and systematic computational scheme for the dynamic motion of closed link mechanisms. The scheme can also be extended to multiple closed kinematic mechanisms. The closed link mechanism is essentially, treated as if it were cut at one of joints. The closed link mechanism is then equivalent to an open tree structure mechanism with constraints at the cut joint: By applying d’Alembert’s principle, the dynamic motion for the equivalent open tree structure mechanism with constraints is established. Based on the constraints condition of the original closed link mechanism

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Mohapatra, Raghunath, Dasarathi Murmu, and Alok Mohanty. "A comparative study of open and closed hemorrhoidectomy." International Surgery Journal 5, no. 6 (2018): 2332. http://dx.doi.org/10.18203/2349-2902.isj20182249.

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Background: Hemorrhoidectomy is the treatment of choice for patients with third-degree or fourth-degree haemorrhoids. This prospective randomized clinical study compared the outcome of surgical haemorrhoidectomy by open and closed techniques in terms of postoperative pain, wound healing, and morbidity.Methods: All consecutive patients with Grade III internal haemorrhoids or Grade IV haemorrhoids were randomly allocated to one of two groups. The entire wound was left open in the open group and completely closed using 2-0 chromic sutures in the closed group. Postoperative pain was assessed by a

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Duan, Jin, Xiao Ming Chen, Hu Qi, and Yun Gui Li. "Boundary-Constraint Meshing Based on Paving Method." Applied Mechanics and Materials 627 (September 2014): 262–67. http://dx.doi.org/10.4028/www.scientific.net/amm.627.262.

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This paper would modify thepaving method of Blacker and Stephenson [1] to generate boundary-constraint quad-mesh for arbitrary plane geometry. The basic idea for the present method is to classify the initial boundaries into closed borders and open borders.The closed borders aredescribed in a manner just the same as the paving method while the open borders areheuristically modeled as cracks with zero-width.And then the two kinds of borders aredelicatelyconnected each other to generate a new kind of boundary, named generalized closed boundary. Based on the newboundaries, the paving methodin Ref.

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Panagiotou, Eleni, and Louis H. Kauffman. "Knot polynomials of open and closed curves." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 476, no. 2240 (2020): 20200124. http://dx.doi.org/10.1098/rspa.2020.0124.

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In this manuscript, we introduce a method to measure entanglement of curves in 3-space that extends the notion of knot and link polynomials to open curves. We define the bracket polynomial of curves in 3-space and show that it has real coefficients and is a continuous function of the curve coordinates. This is used to define the Jones polynomial in a way that it is applicable to both open and closed curves in 3-space. For open curves, the Jones polynomial has real coefficients and it is a continuous function of the curve coordinates and as the endpoints of the curve tend to coincide, the Jones

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Halkia, E., A. Tsochrinis, D. T. Vassiliadou, et al. "Peritoneal Carcinomatosis: Intraoperative Parameters in Open (Coliseum) versus Closed Abdomen Hipec." International Journal of Surgical Oncology 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/610597.

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Background.Peritoneal carcinomatosis (PC) is associated with a poor prognosis. Cytoreductive surgery (CRS) and HIPEC play an important role in well-selected patients with PC. The aim of the study is to present the differences in the intraoperative parameters in patients who received HIPEC in two different manners, open versus closed abdomen.Patients and Methods.The population includes 105 patients with peritoneal carcinomatosis from colorectal, gastric, and ovarian cancer, sarcoma, mesothelioma, and pseudomyxoma peritonei. Group A(n=60)received HIPEC using the open technique and Group B(n=45)r

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Yu, Yushu, Jinglin Li, Xin Li, and Yi Yang. "Error Uncertainty Analysis in Planar Closed-Loop Structure with Joint Clearances." Metals 11, no. 11 (2021): 1872. http://dx.doi.org/10.3390/met11111872.

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For planar closed-loop structures with clearances, the angular and positional error uncertainties are studied. By using the vector translation method and geometric method, the boundaries of the errors are analyzed. The joint clearance is considered as being distributed uniformly in a circle area. A virtual link projection method is proposed to deal with the clearance affected length error probability density function (PDF) for open-loop links. The error relationship between open loop and closed loop is established. The open-loop length PDF and the closed-loop angular error PDF both approach be

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Fegade, Snehal Vishnu, and Nandini Anil Patil. "A comparative study of open method versus closed method of drainage in breast abscess." MedPulse International Journal of Surgery 11, no. 3 (2019): 153–56. http://dx.doi.org/10.26611/1061133.

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Vaishnani, Bhavesh V., Kapil R. Kachhadiya, and Mohit R. Chauhan. "A comparative study of the open versus closed method of pneumoperitoneum creation in laparoscopic surgery." International Surgery Journal 8, no. 11 (2021): 3344. http://dx.doi.org/10.18203/2349-2902.isj20214368.

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Background: The main challenge facing the laparoscopic surgery is the primary abdominal access, as it is usually a blind procedure and associated with many complications including life threading vascular and visceral injuries. Techniques for the creation of pneumoperitoneum in laparoscopy include the standard technique of insufflation after insertion of the Veress needle (closed method), open laparoscopy (Hasson technique) and many others.Methods: This is observational study conducted in the department of General surgery, PDUMC, Rajkot from September 2018 to September 2020 comprising of 100 ca

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Otkun, Özcan, R. Özgür Doğan, and A. Sefa Akpinar. "Performance Analysis of Linear Permanent Magnets Synchronous Motor by Scalar Control Method (v/f)." Applied Mechanics and Materials 666 (October 2014): 199–202. http://dx.doi.org/10.4028/www.scientific.net/amm.666.199.

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This study is conducted to improve the performance of Linear Permanent Magnet Synchronous Motor by using Scalar Control Method. To do this, open and closed loop control methods are used. The study is modeled with MATLAB / SIMULINK. Firstly, the Simulink model has been developed by using equations dq axis system of the motor. Then, a scalar control method is modeled. Thirdly, open and closed loop control forms are modeled. From these models, current, thrust force, and speed graphs were obtained. It is seen on the graphs, the motor's closed loop PID control at scalar control method provide posit

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Thakore, Digpal, M. S. RAY, Naresh Modi, Brinda Panchal, Aditya Raval, and Vishal Patel. "Comparative study of outcomes in patients where pneumoperitoneum is created by Veress needle versus open method in laparoscopic surgeries." International Surgery Journal 10, no. 3 (2023): 437–42. http://dx.doi.org/10.18203/2349-2902.isj20230497.

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Background: The establishment of pneumoperitoneum is the inevitable first step in laparoscopic surgery as it increases the distance between the anterior abdominal wall and intra-abdominal viscera, thus creating a working space. Methods: This prospective study was conducted on 50 patients. Patients were randomly divided into two groups, in first group, pneumoperitoneum is created by Veress needle and in second group, pneumoperitoneum is created by open method. Results: The open method takes less time to create pneumoperitoneum while leads to statistically significant more gas leaks as compared

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Banis, George, Emmanouela Mangiorou, Panagiota Tselou, Angelo Ferraro, and Evangelos Hristoforou. "Magnetic Particles Retaining on Open and Closed Systems." Key Engineering Materials 826 (October 2019): 25–29. http://dx.doi.org/10.4028/www.scientific.net/kem.826.25.

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In recent decades the application of magnetic iron oxide micro-and nanoparticles has been established in various technological fields, such as magnetic separation of biomolecules and ions, biosensors, biofuel production and others [1-4]. Working with iron oxide particles is becoming main stream subject thanks to the facility that this kind of materials can be functionalized with a variety of chemical groups which confer them specific selective or catalytic properties [5]. Furthermore, iron oxide nanoparticles present magnetic properties, and in particular super-paramagnetism, which allows to r

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Hu, Juju, Qin Xue, and Yinghua Ji. "Identification of open quantum system: Via closed feedback control." International Journal of Modern Physics B 33, no. 27 (2019): 1950327. http://dx.doi.org/10.1142/s0217979219503272.

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For stochastic quantum systems with given dissipations, the identification method of Hamiltonian is given in this paper. First, the stability of the system is realized through designing a real-time feedback control method. Second, by using Routh–Hurwitz stability criterion, the intervals of the element values of the system Hamiltonians are given. Finally, the identification of Hamiltonian is realized by selecting the equilibrium state of the system equal to the desired target state. For two typical categories of noise: Purely dephasing decoherence and amplitude damping decoherence, we check th

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CHICK, VICTORIA. "On Open Systems." Brazilian Journal of Political Economy 24, no. 1 (2004): 3–17. http://dx.doi.org/10.1590/0101-31572004-1638.

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ABSTRACT To many, economics is seen as increasingly divorced from reality. I shall argue that one of the causes of this divorce is the attachment to closed-system theorising, and advocate instead the method of open systems with partial and temporary closures. Definitions of closed and open systems are examined. It is evident that there are many different criteria which may define open systems. Theorists differ in their emphasis on one or other criterion. There are also different dimensions of openness: openness to non-economic factors; the openness of economic theories themselves; the interpla

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Laidlaw, William G., and Milan Trsic. "Molecular conformation of ozone and thiozone: the transition state method." Canadian Journal of Chemistry 63, no. 7 (1985): 2044–46. http://dx.doi.org/10.1139/v85-337.

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The relative energy of the closed and open forms of ozone and thiozone are calculated using the HFS DVM transition state method. For ozone the open form is lower by some 21 kcal/mol and for thiozone the open form is some 11 kcal/mol lower.

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Sauren, LD, EJ Mooren, EE Severdija, PW Weerwind, and JG Maessen. "Emboli occurrence during coronary artery bypass surgery: the influence of a new method of perfusionist blood sampling." Perfusion 23, no. 5 (2008): 261–65. http://dx.doi.org/10.1177/0267659109103390.

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Peri-operative cerebral microemboli in cardiac surgery are associated with post-operative neurological complications. Cardiopulmonary bypass (CPB) and perfusionist interventions are important contributors of microemboli. In this study, we examined the influence of blood sampling by the perfusionist on the appearance of microembolic signals (MES) in an open and a closed CPB system. Fourteen patients underwent isolated coronary artery bypass grafting (CABG), using either an open or closed CPB system. Patients were monitored with transcranial Doppler (TCD) for the occurrence MES in both middle ce

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Zhao, Xingyu, Qiuhong Li, Shuwei Pang, Zhaohui Xue, Daming Deng, and Feng Lu. "Research on Adaptive Cycle Engine Mode Transition Control Method." Energies 17, no. 6 (2024): 1276. http://dx.doi.org/10.3390/en17061276.

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Mode transition is an important dynamic process of an adaptive cycle engine (ACE). In order to obtain a smooth mode transition process, the closed-loop controller is designed based on the strong robust augmented linear quadric regulator (ALQR) method, and with the objective of minimizing the thrust fluctuation in the process of mode transition, an open-loop geometrical mechanism control schedules optimization method based on Bézier curves is proposed, so that the closed-loop control and the open-loop control can work in coordination. The simulation results at the subsonic cruise operating poin

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Wan, Wenhai, Xinrui Wang, Ming-Kun Xie, Shao-Yuan Li, Sheng-Jun Huang, and Songcan Chen. "Unlocking the Power of Open Set: A New Perspective for Open-Set Noisy Label Learning." Proceedings of the AAAI Conference on Artificial Intelligence 38, no. 14 (2024): 15438–46. http://dx.doi.org/10.1609/aaai.v38i14.29469.

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Learning from noisy data has attracted much attention, where most methods focus on closed-set label noise. However, a more common scenario in the real world is the presence of both open-set and closed-set noise. Existing methods typically identify and handle these two types of label noise separately by designing a specific strategy for each type. However, in many real-world scenarios, it would be challenging to identify open-set examples, especially when the dataset has been severely corrupted. Unlike the previous works, we explore how models behave when faced with open-set examples, and find

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KHOKHAR, M. I., H. R. U. ISLAM, and M. AYYAZ. "Open Versus Closed Pneurnoperitoneum in Laparoscopic Cholecystectomy." Annals of King Edward Medical University 11, no. 2 (2021): 155–58. https://doi.org/10.21649/akemu.v11i2.4301.

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Objective: To present experience of open versus closed pneumoperitoneum in laparoscopic cholecystectomy. Design: This is an observational, comparative study. Place and duration: South Surgical Unit, Mayo Hospital, Lahore, from Jan 2001 to Dec 2002. Subjects and methods. This observational, comparative study was conducted in South Surgical Unit, Mayo Hospital, Lahore. Hundred patients under-going laparoscopic cholecystectomy using conventional pneumoperitoneum techniques from January 2001 to December 2002 were included in this study. The closed and open techniques of establishing pneumoperitone

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Yang, Xianglong, Jinying Yu, Xiufang Chen, et al. "Basal plane bending of 4H-SiC single crystals grown by sublimation method with different seed attachment methods." CrystEngComm 20, no. 43 (2018): 6957–62. http://dx.doi.org/10.1039/c8ce00910d.

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Jain, Adeesh P., Sarav C. Shah, Purva C. Shah, and Karan R. Patel. "A comparative study of open versus closed method of establishment of pneumoperitoneum in laparoscopic surgery." International Surgery Journal 6, no. 9 (2019): 3335. http://dx.doi.org/10.18203/2349-2902.isj20194075.

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Background: Laparoscopy has overtaken open surgery as the choice of procedure wherever feasible. More than 50% of complications in laparoscopy occur during creation of pneumoperitoneum. In this study, we are comparing open or Hasson's method and closed or vress method of creation of pneumoperitoneum.Methods: This is a prospective comparative parallel randomised control trial conducted at the Department of Surgery, Baroda Medical College and SSG Hospital from November, 2017 to November, 2018. We divided the patients (n=100) into two groups i.e., open method (group O) (n1=50) and closed method (

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Silber, Henning, Cornelia Zuell, and Steffen-M. Kuehnel. "What can we learn from open questions in surveys? A case study on non-voting reported in the 2013 German longitudinal election study." Methodology 16, no. 1 (2020): 41–58. http://dx.doi.org/10.5964/meth.2801.

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Open survey questions are often used to evaluate closed questions. However, they can fulfil this function only if there is a strong link between answers to open questions and answers to related closed questions. Using reasons for non-voting reported in the German Longitudinal Election Study 2013, we investigated this link by examining whether the reported reasons for non-voting may be substantive reasons or ex-post legitimations. We tested five theoretically derived hypotheses about respondents who gave, or did not give, a specific reason. Results showed that (a) answers to open questions were

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