This paper considers (p, q )-Epidemic Routing, a class of store-carry-forward routing schemes, for sparsely populated mobile ad hoc networks. Our forwarding scheme includes Two-Hop Forwarding and the conventional Epidemic Routing as special cases. In such original packet is copied many times its copies spread over network. Therefore those should be deleted after reaches destination. We analyze performance q)-Epidemic with VACCINE recovery scheme. Unlike most existing studies, we discuss in...

This survey summarizes the state-of-the-art research on network coding, mainly focusing its applications to computer networking. Network coding generalizes traditional store-and-forward routing techniques by allowing intermediate nodes in networks encode several received packets into a single coded packet before forwarding. was proposed 2000, and since then, it has been studied extensively field of In this survey, we first summarize linear provide taxonomy research, i.e., design problem...

In greenhouse tomato cultivation, three primary methods of flower pollination exist: insect pollination, physical by vibrating flowers, and artificial using hormone-based chemicals. Insect the natural method, involves insects (e.g., honeybees) flowers to collect pollen nectar. This paper proposes an alternate approach, small drones search pollinate in place bees autonomously. We report field experiments conducted these drone technologies. The must locate ready for pollination. developed...

This paper considers a fairness issue between uplink and downlink flows in IEEE 802.11 wireless LANs, where dominate over terms of bandwidth usage. As solution to this unfairness, we propose modifying the MAC protocol at access points (APs). Our scheme dynamically controls minimum contention window size APs provides an ample opportunity for them acquire transmission right. Note that proposed does not require any modifications terminals. Furthermore, optimal is given by explicit function...

In this study, we realized a relay network using drones and analyzed the impact of sway angle drone’s attitude on communication in windy flight environment. Drones act as radio stations among them is performed equipment mounted board. environment, directional antenna used for to avoid interference caused by spread waves space extend distance. However, when wind occurs during flight, flying drone inclines, which causes beam link be disconnected, leading decrease transmission speed....

We have developed a new light-trapping scheme for thin-film Si stacked module (Si HYBRID PULS module), where (a-Si:H/transparent interlayer/microcrystalline Si) was integrated into large-area solar cell module.An initial aperture efficiency of 13Á1% has been achieved 910 Â 455 mm PLUS module, which independently confirmed by AIST.This is the first report with an interlayer.The 19% increase short-circuit current this obtained introduction transparent interlayer that caused internal...

Efficient text recognition has recently been a challenge for augmented reality systems. In this paper, we propose system with the ability to provide translations user in real-time. We use eye gaze more intuitive and efficient input ubiquitous reading translation head mounted displays (HMDs). The eyes can be used indicate regions of interest documents activate optical-character-recognition (OCR) functions. Visual feedback navigation help interaction process, snippets from Japanese English...

Recently, electromagnetic wireless power transfer (WPT) has emerged as a promising technology for supplying to multiple terminals. Previous studies have devised packet transmission methods, commonly used in telecommunication, analysis. This study develops simulator that calculates the received by integrating power–packet conversion method, based on previous research. The incorporates several scheduling functions facilitate investigation of efficiency power-feeding methods. analyzes efficacy...

Background: Biological agents are essential treatment options for severe asthma, particularly in cases with Type 2 (T2) inflammation, due to their ability improve symptoms, prevent exacerbations, and reduce the use of oral corticosteroids. However, limited data exist regarding long-term effects on lung function, forced expiratory volume one second (FEV₁). This study aimed analyze longitudinal changes FEV₁ before after initiation biological by following over an extended period. Methods:...

In this paper, we propose an uplink multiuser-multiple input multiple output (MU-MIMO) cooperative retransmission control scheme for the reliable and efficient communication of autonomous unmanned aerial vehicles (i.e., flight drone-to-drone communication). This is a key element in design drone-based ad-hoc network. Because drone relay transmission operates air, flexible wireless networks over large areas can be achieved without interference from multipath signals caused by buildings...

インターネットは世界を結ぶ情報社会の基盤となっている.しかし,その基礎となるTCP/IP(Transmission Control Protocol/Internet Protocol)技術の設計の中では,極端に長い通信遅延時間,頻繁なパケット損,間欠的な通信リンクの出現,などが発生する通信環境は想定されておらず,情報通信を必要とする環境の著しい多様化に対応するためには拡張が必要である.惑星間インターネットを起源に持つ,遅延耐性ネットワーク(DTN:Delay, Disruption, Disconnection Tolerant Networking)と呼ばれる技術領域は,従来のTCP/IP 技術では対応できなかった状況においてもエンドツーエンドの情報伝達を実現する枠組みとして誕生した.本論文では,従来技術をある程度知っている読者を想定し,近年研究が活発化しているDTN 技術に関して概説を与える.DTN...

Network tomography is an inference technique for internal network characteristics from end-to-end measurements. In this letter, we propose a new scheme to classify communication links into lower or higher quality classes according their link loss rates. The two-class classification achieved by the estimation of rates via compressed sensing, which emerging theory obtain sparse solution underdetermined linear system, with regarding in class as 0. proposed scheme, implement sensing ℓ <sub...

In remote control, efficient compression or representation of control signals is essential to send them through rate-limited channels. For this purpose, we propose an approach sparse signal using the compressive sampling technique. The problem obtaining formulated by cardinality-constrained l2 optimization performance, which reducible l1-l2 optimization. low rate random employed in proposed method based on sampling, addition fact that can be effectively solved a fast iteration method,...

In this paper, we discuss TCP congestion control in the future heterogeneous mobile Internet where various access links such as a wireless LAN and cellular network are integrated. Vertical handover (VH), which is technique between different types of links, one most important technologies. However, vertical significantly degrades performance because it causes drastic change bandwidth-delay product (BDP). propose new for improving during handover. The proposed system receiver driven controls...

The paper discusses the development of a new light trapping scheme for thin film Si based stacked cell and module, where newly developed innovative interlayer is inserted between amorphous microcrystalline film. This leads intentional controlling refractive index it. with lower 1.7 at 600 nm exhibits both better reflection towards top silicon less absorption loss bottom cell. We also proved by numerical simulation that effect on more enhanced textured substrate. An initial efficiency 15.0%...

In a scene image, some characters are difficult to recognize and others recognized easily. Such usually make the processing time long while easy in short time. this paper, we propose system which recognizes each character with proper cost for difficulty. Through process, early ones late. This is desired property of an anytime algorithm that recognition accuracy does not decrease as increases. order realize it, method splits process into several times accumulates results extracted features....

Networks constructed in the sky are known as non-terrestrial networks (NTNs). As an example of NTN, relay transmission using drones radio stations enables flexible network construction air by performing handovers with ground stations. However, presence structures or obstacles flight path causes multipath interference; consequently, propagation environment fluctuates significantly based on flight. In such a communication environment, it is difficult for drone to select optimal station...

Abstract Storm water runoff from urban roadways contains anthropogenic pollutants, which are mainly generated traffic-related activities. The purpose of this study was to evaluate the characteristics pollutants roadway as well first flush effects. sampled during five storm events experimental site in Otsu, Shiga, Japan. From hydrographs and pollutographs for runoff, concentration increased with increasing flow low rate event, but did not significantly increase high event. Moreover, according...