Pub Date : 2023-12-01DOI: 10.21538/0134-4889-2023-29-4-130-139
Анастасия Олеговна Леонтьева
{"title":"О константах в неравенстве Бернштейна - Сегё для производной Bейля порядка, меньшего единицы, тригонометрических полиномов и целых функций экспоненциального типа в равномерной норме","authors":"Анастасия Олеговна Леонтьева","doi":"10.21538/0134-4889-2023-29-4-130-139","DOIUrl":"https://doi.org/10.21538/0134-4889-2023-29-4-130-139","url":null,"abstract":"","PeriodicalId":44555,"journal":{"name":"Trudy Instituta Matematiki i Mekhaniki UrO RAN","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138608049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.21538/0134-4889-2023-29-4-27-48
В. В. Арестов, М. В. Дейкалова
{"title":"Обобщенный сдвиг, порожденный sinc-функцией, на отрезке","authors":"В. В. Арестов, М. В. Дейкалова","doi":"10.21538/0134-4889-2023-29-4-27-48","DOIUrl":"https://doi.org/10.21538/0134-4889-2023-29-4-27-48","url":null,"abstract":"","PeriodicalId":44555,"journal":{"name":"Trudy Instituta Matematiki i Mekhaniki UrO RAN","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138618617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.21538/0134-4889-2023-29-4-292-295
Александр Григорьевич Бабенко, М. В. Дейкалова
{"title":"O Международной Школе-конференции С. Б. Стечкина по теории функций, посвященной 80-летию профессора В. В. Арестова","authors":"Александр Григорьевич Бабенко, М. В. Дейкалова","doi":"10.21538/0134-4889-2023-29-4-292-295","DOIUrl":"https://doi.org/10.21538/0134-4889-2023-29-4-292-295","url":null,"abstract":"","PeriodicalId":44555,"journal":{"name":"Trudy Instituta Matematiki i Mekhaniki UrO RAN","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138621345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.21538/0134-4889-2023-29-4-229-240
К. Ю. Осипенко
{"title":"Точные неравенства типа Карлсона со многими весами","authors":"К. Ю. Осипенко","doi":"10.21538/0134-4889-2023-29-4-229-240","DOIUrl":"https://doi.org/10.21538/0134-4889-2023-29-4-229-240","url":null,"abstract":"","PeriodicalId":44555,"journal":{"name":"Trudy Instituta Matematiki i Mekhaniki UrO RAN","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138622831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.21538/0134-4889-2023-29-4-49-54
Виталий Иванович Бердышев
{"title":"Движение наблюдателя по конусу в $R^3$ в условиях противодействия со стороны объекта","authors":"Виталий Иванович Бердышев","doi":"10.21538/0134-4889-2023-29-4-49-54","DOIUrl":"https://doi.org/10.21538/0134-4889-2023-29-4-49-54","url":null,"abstract":"","PeriodicalId":44555,"journal":{"name":"Trudy Instituta Matematiki i Mekhaniki UrO RAN","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138624116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tommaso Cai, Marco Capece, Maria Grazia Zorzi, Alessandro Palmieri, Gabriella Nesi, Mattia Barbareschi, Truls E. Bjerklund Johansen
Background: Management of penile cancer patients has its grey zones. In particular, no strong evidence or recommendations exist regarding the timing of prophylactic lymphadenectomy. Here, we aim to review the impact that the timing of inguinal and pelvic prophylactic lymph node dissection has on patient outcome. Methods: All relevant databases were searched following the preferred reporting items for systematic reviews and meta-analysis guidelines. A narrative review of indications for lymph node dissection and pathological considerations precede a systematic review of the impact of prophylactic lymph node dissection timing on prognosis. The primary endpoint is disease-free and overall survival in patients undergoing early or late lymph node dissection after penile cancer diagnosis. Results: Four clinical trials, all focusing on the role of inguinal lymph node dissection, are included. Despite the lack of randomized and controlled trials, this review suggests that lymph node dissection should be performed as soon as possible after diagnosis, with 3 months as a realistic cut-off. Conclusions: Survival of penile cancer patients is strictly related to the timing of prophylactic pelvic lymph node dissection. All patients at high risk of nodal metastasis should be offered lymph node dissection within three months of diagnosis, until new predicting tools are validated.
{"title":"Prophylactic Lymphadenectomy in Patients with Penile Cancer: Is Sooner Better?","authors":"Tommaso Cai, Marco Capece, Maria Grazia Zorzi, Alessandro Palmieri, Gabriella Nesi, Mattia Barbareschi, Truls E. Bjerklund Johansen","doi":"10.3390/uro3040025","DOIUrl":"https://doi.org/10.3390/uro3040025","url":null,"abstract":"Background: Management of penile cancer patients has its grey zones. In particular, no strong evidence or recommendations exist regarding the timing of prophylactic lymphadenectomy. Here, we aim to review the impact that the timing of inguinal and pelvic prophylactic lymph node dissection has on patient outcome. Methods: All relevant databases were searched following the preferred reporting items for systematic reviews and meta-analysis guidelines. A narrative review of indications for lymph node dissection and pathological considerations precede a systematic review of the impact of prophylactic lymph node dissection timing on prognosis. The primary endpoint is disease-free and overall survival in patients undergoing early or late lymph node dissection after penile cancer diagnosis. Results: Four clinical trials, all focusing on the role of inguinal lymph node dissection, are included. Despite the lack of randomized and controlled trials, this review suggests that lymph node dissection should be performed as soon as possible after diagnosis, with 3 months as a realistic cut-off. Conclusions: Survival of penile cancer patients is strictly related to the timing of prophylactic pelvic lymph node dissection. All patients at high risk of nodal metastasis should be offered lymph node dissection within three months of diagnosis, until new predicting tools are validated.","PeriodicalId":44555,"journal":{"name":"Trudy Instituta Matematiki i Mekhaniki UrO RAN","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135241745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Natalie Mainland, Dana A. Ohl, Ahmed R. Assaly, Nabila Azeem, Amber Cooper, Angie Beltsos, Puneet Sindhwani, Tariq A. Shah
Fertility preservation technologies have existed for decades, and the field is rapidly advancing; limited data exist regarding the use of these technologies by transgender patients. Many options are available for transgender patients who wish to preserve fertility before transitioning. These options include the cryopreservation of gametes, embryos, or ovarian tissue. Currently, ejaculated, or testicular sperm, immature oocytes, and ovarian tissue can be preserved for later use, but no such use option exists for immature testicular tissue. Many financial, sociological, and legal barriers and a lack of awareness among physicians and patients also hinders the utilization of these fertility preservation services. While options are abundant, usage rates are relatively low. The initial data regarding the successful use of preserved tissues appears promising, with birth rates not dissimilar to non-transgender patients. Further investigations into this area are needed. In addition, counseling regarding fertility preservation options should become a significant part of the provider-patient conversation before transitioning therapies.
{"title":"Fertility Preservation Options for Transgender Patients: An Overview","authors":"Natalie Mainland, Dana A. Ohl, Ahmed R. Assaly, Nabila Azeem, Amber Cooper, Angie Beltsos, Puneet Sindhwani, Tariq A. Shah","doi":"10.3390/uro3040024","DOIUrl":"https://doi.org/10.3390/uro3040024","url":null,"abstract":"Fertility preservation technologies have existed for decades, and the field is rapidly advancing; limited data exist regarding the use of these technologies by transgender patients. Many options are available for transgender patients who wish to preserve fertility before transitioning. These options include the cryopreservation of gametes, embryos, or ovarian tissue. Currently, ejaculated, or testicular sperm, immature oocytes, and ovarian tissue can be preserved for later use, but no such use option exists for immature testicular tissue. Many financial, sociological, and legal barriers and a lack of awareness among physicians and patients also hinders the utilization of these fertility preservation services. While options are abundant, usage rates are relatively low. The initial data regarding the successful use of preserved tissues appears promising, with birth rates not dissimilar to non-transgender patients. Further investigations into this area are needed. In addition, counseling regarding fertility preservation options should become a significant part of the provider-patient conversation before transitioning therapies.","PeriodicalId":44555,"journal":{"name":"Trudy Instituta Matematiki i Mekhaniki UrO RAN","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135197487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-12DOI: 10.21538/0134-4889-2023-29-4-193-216
B'ela Nagy, S. R'ev'esz
We investigate the weighted Bojanov-Chebyshev extremal problem for trigonometric polynomials, that is, the minimax problem of minimizing $|T|_{w,C({mathbb T})}$, where $w$ is a sufficiently nonvanishing, upper bounded, nonnegative weight function, the norm is the corresponding weighted maximum norm on the torus ${mathbb T}$, and $T$ is a trigonometric polynomial with prescribed multiplicities $nu_1,ldots,nu_n$ of root factors $|sin(pi(t-z_j))|^{nu_j}$. If the $nu_j$ are natural numbers and their sum is even, then $T$ is indeed a trigonometric polynomial and the case when all the $nu_j$ are 1 covers the Chebyshev extremal problem. Our result will be more general, allowing, in particular, so-called generalized trigonometric polynomials. To reach our goal, we invoke Fenton's sum of translates method. However, altering from the earlier described cases without weight or on the interval, here we find different situations, and can state less about the solutions.
{"title":"On the weighted trigonometric Bojanov - Chebyshev extremal problem","authors":"B'ela Nagy, S. R'ev'esz","doi":"10.21538/0134-4889-2023-29-4-193-216","DOIUrl":"https://doi.org/10.21538/0134-4889-2023-29-4-193-216","url":null,"abstract":"We investigate the weighted Bojanov-Chebyshev extremal problem for trigonometric polynomials, that is, the minimax problem of minimizing $|T|_{w,C({mathbb T})}$, where $w$ is a sufficiently nonvanishing, upper bounded, nonnegative weight function, the norm is the corresponding weighted maximum norm on the torus ${mathbb T}$, and $T$ is a trigonometric polynomial with prescribed multiplicities $nu_1,ldots,nu_n$ of root factors $|sin(pi(t-z_j))|^{nu_j}$. If the $nu_j$ are natural numbers and their sum is even, then $T$ is indeed a trigonometric polynomial and the case when all the $nu_j$ are 1 covers the Chebyshev extremal problem. Our result will be more general, allowing, in particular, so-called generalized trigonometric polynomials. To reach our goal, we invoke Fenton's sum of translates method. However, altering from the earlier described cases without weight or on the interval, here we find different situations, and can state less about the solutions.","PeriodicalId":44555,"journal":{"name":"Trudy Instituta Matematiki i Mekhaniki UrO RAN","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139340672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Ricapito, Matteo Rubino, P. Annese, V. Mancini, U. Falagario, L. Cormio, G. Carrieri, G. Busetto, C. Bettocchi
Introduction: Urinary incontinence is a prevalent condition, especially in elderly men, with stress urinary incontinence (SUI) being a common cause after radical prostatectomy. The artificial urinary sphincter (AUS), particularly the AMS 800™ device, has been the gold-standard treatment for moderate-severe male SUI for decades. Despite some technical advancements and alternative devices like ZSI-375, Victo, and BR-SL-AS 904 being introduced, there is limited literature comparing their effectiveness to the AMS 800™. Methods: This literature review compares the AMS 800™ to the newer technologies in the management of SUI. We reviewed the current literature on urinary sphincter implant in male stress incontinence, including AMS 800™, ZSI-375, Victo, and BR-SL-AS 904. Findings: The AMS 800™ is a sophisticated system consisting of an inflatable cuff, a pressure-regulating balloon, and a control pump. Studies show continence rates ranging from 61% to 100% with AMS 800™ implants, with low infection rates and significant improvement in patients’ quality of life. The ZSI-375 sphincter is a unique single-piece cuff without an abdominal reservoir, simplifying implantation. Preliminary data show a social continence rate of 73% at six months, with lower complication rates than the AMS 800™. The VICTO® device offers adjustable pressure and a stress relief mechanism, providing conditional occlusion of the urethra. Early studies report a satisfaction rate of up to 94.2% and a complication rate of 17.6%. BR-SL-AS 904 is a newly proposed urinary sphincter, but due to the limited number of cases and a single study, its efficacy and complication rates remain uncertain. Conclusions: Overall, AMS 800™ remains the gold-standard treatment for SUI after radical prostatectomy. Alternative devices like ZSI-375 and VICTO® show promising results, but longer studies and more data are needed to establish their effectiveness and safety compared with the AMS 800™. Further research and ongoing monitoring are essential to address mechanical issues associated with AUS implants.
{"title":"Urinary Artificial Sphincter in Male Stress Urinary Incontinence: Where Are We Today? A Narrative Review","authors":"A. Ricapito, Matteo Rubino, P. Annese, V. Mancini, U. Falagario, L. Cormio, G. Carrieri, G. Busetto, C. Bettocchi","doi":"10.3390/uro3030023","DOIUrl":"https://doi.org/10.3390/uro3030023","url":null,"abstract":"Introduction: Urinary incontinence is a prevalent condition, especially in elderly men, with stress urinary incontinence (SUI) being a common cause after radical prostatectomy. The artificial urinary sphincter (AUS), particularly the AMS 800™ device, has been the gold-standard treatment for moderate-severe male SUI for decades. Despite some technical advancements and alternative devices like ZSI-375, Victo, and BR-SL-AS 904 being introduced, there is limited literature comparing their effectiveness to the AMS 800™. Methods: This literature review compares the AMS 800™ to the newer technologies in the management of SUI. We reviewed the current literature on urinary sphincter implant in male stress incontinence, including AMS 800™, ZSI-375, Victo, and BR-SL-AS 904. Findings: The AMS 800™ is a sophisticated system consisting of an inflatable cuff, a pressure-regulating balloon, and a control pump. Studies show continence rates ranging from 61% to 100% with AMS 800™ implants, with low infection rates and significant improvement in patients’ quality of life. The ZSI-375 sphincter is a unique single-piece cuff without an abdominal reservoir, simplifying implantation. Preliminary data show a social continence rate of 73% at six months, with lower complication rates than the AMS 800™. The VICTO® device offers adjustable pressure and a stress relief mechanism, providing conditional occlusion of the urethra. Early studies report a satisfaction rate of up to 94.2% and a complication rate of 17.6%. BR-SL-AS 904 is a newly proposed urinary sphincter, but due to the limited number of cases and a single study, its efficacy and complication rates remain uncertain. Conclusions: Overall, AMS 800™ remains the gold-standard treatment for SUI after radical prostatectomy. Alternative devices like ZSI-375 and VICTO® show promising results, but longer studies and more data are needed to establish their effectiveness and safety compared with the AMS 800™. Further research and ongoing monitoring are essential to address mechanical issues associated with AUS implants.","PeriodicalId":44555,"journal":{"name":"Trudy Instituta Matematiki i Mekhaniki UrO RAN","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88552448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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