http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Konishi, Satoshi,Kishi, Yoji,Nanba, Shinobu,Nomoto, Shinichi 통신위성우주산업연구회 2001 Joint Conference on Satellite Communications Vol.2001 No.-
In wide-area wireless access systems such as satellite communications systems and stratospheric platform systems, electric power supply for radio communications is realized by using solar photovoltaic cells and/or fuel cells. Hence, not only frequency band but also electric power is a limited and crucial radio resources for those systems. Although radio channel allocation algorithms taking account of the frequency constraint only or the power constraint only have been proposed, radio channel allocation algorithms taking account of the both constraints simultaneously have not been studied enough so far. This paper proposes a radio channel allocation algorithm utilizing the linear programming method to address this issue. The proposed algorithm firstly allocates radio channels in proportion to the traffic demand distributed over the area and then maximizes the total radio channels allocated to systems. Some numerical results are given for a stratospheric platform system that covers a part of Japanese land, for example, in order to demonstrate the effectiveness of this algorithm.
Satoshi Sugino,Ken Inoue,Reo Kobayashi,Ryohei Hirose,Toshifumi Doi,Akihito Harusato,Osamu Dohi,Naohisa Yoshida,Kazuhiko Uchiyama,Takeshi Ishikawa,Tomohisa Takagi,Hiroaki Yasuda,Hideyuki Konishi,Yasuko 대한소화기 기능성질환∙운동학회 2022 Journal of Neurogastroenterology and Motility (JNM Vol.28 No.4
Background/Aims Several studies have assessed the effect of cool temperature on colonic peristalsis. Transient receptor potential melastatin 8 (TRPM8) is a temperature-sensitive ion channel activated by mild cooling expressed in the colon. We examined the antispasmodic effect of cool temperature on colonic peristalsis in a prospective, randomized, single-blind trial and based on the video imaging and intraluminal pressure of the proximal colon in rats and TRPM8-deficient mice. Methods In the clinical trial, we randomly assigned a total of 94 patients scheduled to undergo colonoscopy to 2 groups: the mildly cool water (n = 47) and control (n = 47) groups. We used 20 mL of 15°C water for the mildly cool water. The primary outcome was the proportion of subjects with improved peristalsis after treatment. In the rodent proximal colon, we evaluated the intraluminal pressure and performed video imaging of the rodent proximal colon with cool water administration into the colonic lumen. Clinical trial registry website (Trial No. UMIN-CTR; UMIN000030725). Results In the randomized controlled trial, after treatment, the proportion of subjects with no peristalsis with cool water was significantly higher than that in the placebo group (44.7% vs 23.4%; P < 0.05). In the rodent colon model, cool temperature water was associated with a significant decrease in colonic peristalsis through its suppression of the ratio of peak frequency (P < 0.05). Cool temperature-treated TRPM8-deficient mice did not show a reduction in colonic peristalsis compared with wild-type mice. Conclusion For the first time, this study demonstrates that cool temperature-dependent suppression of colonic peristalsis may be associated with TRPM8 activation.
Nanba, Shinobu,Konishi, Satoshi,Nomoto, Shinichi 통신위성우주산업연구회 2002 Joint Conference on Satellite Communications Vol.2002 No.-
In wide-area wireless access systems with a large number of cells such as satellite systems and HAPS (High Altitude Platform Systems), a Radio channel allocation scheme based on a pre-plan, where a number of channels are allocated to each cell beforehand, is considered to be effective to reuse the radio resources. In such a channel allocation, it is a problem that the number of channels to be allocated to cells can not be determined appropriately in case of multiple services with different QoS parameters. In this paper, a radio channel allocation scheme based on a pre-plan for multiple services is proposed. The scheme attempts to allocate channels to each cell for all services while keeping fairness among services by introducing a degree of satisfaction as a common measure between services. The degree of satisfaction for each service can be defined by a satisfaction function, which is given for every service. In addition, we device an algorithm to realize the scheme. Moreover, other two algorithms are introduces to achieve fairness among services, where available resources are exclusively partitioned among services by a traffic ratio among services or keeping DoS among services constant and then a number of channels are allocated to each cell according to the traffic demands ratio between cells. In our simulation, these algorithms are compared and evaluated.
Optimum Traffic Distribution Algorithm for Satellite System Taking Account of Satellite Power Limit
Nanba, Shinobu,Konishi, Satoshi,Nomoto, Shinichi 통신위성우주산업연구회 2000 Joint Conference on Satellite Communications Vol.2000 No.-
In satellite communications systems, satellite transmitting power (in short, 'satellite power') is one of the critical radio resources for satellite systems, as well as spectrum resources, due to the limited ability of onboard electric generator. Therefore, for attaining optimum satellite radio resource utilization, it is not enough to just consider the spectrum resources but also to take account of the satellite power. In multiple satellites systems, the coverage of a satellite has overlapping areas with those of adjacent satellites. In this case, the traffic demand in overlapping area can be accommodated by either of visible satellites. For these systems, this paper proposes an algorithm to provide an optimum traffic distribution among satellites. The algorithm adopts linear programming model considering satellite power limits. Numerical examples demonstrate that the proposed algorithms contribute to maximizing the system capacity.
The Way to Make Student Project Activity Successful
Hanabusa, Takao,Konishi, Masaki,Kiriyama, Satoshi Korean Society for Engineering Education 2014 공학교육연구 Vol.17 No.5
Student independent project activity is beneficial for enhancing many kinds of abilities, e.g., team working, collaboration, communication, presentation, creativity, leadership, and so on. More than ten project teams actively perform every year in the Center for Innovation and Creativity Development of The University of Tokushima. The project management workshop was planned in order to make project activity successful. In this workshop, the team members studied the importance of holding a common objective among them and of making a clear plan for achieving the activity. They practiced brainstorming method and KJ method and experienced a PDCA cycle. The team activity will be fruitful on the basis of the project management method.
Study on Scheduling Algorithm for High-Power Short Message Delivery via Multiple Non-GSO Satellites
Nomoto, Shinichi,Shibuya, Megumi,Konishi, Satoshi 통신위성우주산업연구회 2001 Joint Conference on Satellite Communications Vol.2001 No.-
Global short message delivery services via satellites are considered attractive if the service can be supported to indoor subscribers. In order to establish the communications link, it is required to concentrate high transmission power into a spotbeam even by a Non-GSO satellite system with low Earth orbits. The idea can be realized by a kind of TDMA scheme where only a single spotbeam per satellite is fired at a timeslot in an efficiently scheduled manner. The paper proposes a scheduling algorithm that enables each satellite to concentrate its power into a spotbeam illuminating an addressed area at a prescribed timeslot, while causing no interference with other spotbeams from adjacent satellites, so that a subscriber in the area can easily establish the synchronization and efficiently receive a message addressed to him or her. Some numerical evaluations are given for a 6-hour period MEO system, for example, to demonstrate the effectiveness and performances.
On the Satellite Resource Allocation Algorithm Taking Account of Fairness among Spotbeams
Nanba, Shinobu,Kishi, Yoji,Konishi, Satoshi 통신위성우주산업연구회 2001 Joint Conference on Satellite Communications Vol.2001 No.-
In satellite communications systems with multiple-spotbeams, conventional algorithms for satellite resource allocation is suitable for the guaranteed services, which allocate satellite resources to spotbeams to meet the number of required frequency channels as much as possible. In recent years, many kinds of best-effort services are widely spreading in accordance with the explosive growth of the Internet. For the best-effort services, it would be quite significant to keep resource allocation fairness among spotbearns and/or different services. Then, we propose a new satellite resource allocation algorithm that takes account of the fairness among spotbeams. As a measure of fairness, this paper introduces the concept of a degree of satisfaction for each spotbeam. Our algorithm is compared with the conventional algorithm for guaranteed services through simulations and characteristics for both algorithms are discussed.