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Search Results: 1 - 10 of 555 matches for " Haruna Yoshioka "
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On Test Data Compression Using Selective Don’t-Care Identification
On Test Data Compression Using Selective Don t-Care Identification

Terumine Hayashi,Haruna Yoshioka,Tsuyoshi Shinogi,Hidehiko Kita,Haruhiko Takase,
TerumineHayashi
,HarunaYoshioka,TsuyoshiShinogi,HidehikoKita,HaruhikoTakase

计算机科学技术学报 , 2005,
Abstract: This paper proposes an effective method for reducing test data volume under multiple scan chain designs. The proposed method is based on reduction of distinct scan vectors using selective dont-care identification. Selective dont-care identification is repeatedly executed under condition that each bit of frequent scan vectors is fixed to binary values (0 or 1). Besides, a code extension technique is adopted for improving compression efficiency with keeping decompressor circuits simple in the manner that the code length for infrequent scan vectors is designed as double of that for frequent ones. The effectiveness of the proposed method is shown through experiments for ISCAS89 and ITC99 benchmark circuits.
Synthesis and characterisation of temperature responsive poly (2-ethyl-2-oxazolines
M Haruna
Bayero Journal of Pure and Applied Sciences , 2010,
Abstract: A bifunctional Poly(2-ethyl-2-oxazolines) containing hydrophobic end groups at both end of the polymer chains were synthesised by terminating a living cationic polymerisation with 4- bromomethyl benzoic acid. The results obtained for the clouding point measurement using UVvisible spectrophotometer shows that bifunctional polymer containing 20 monomer units (DP 20) exhibited a lower critical solution temperature (LCST) near 49oC due to formation of hydrophobic domains by the polymer end-groups. In contrast, the polymer with 50 monomer units does not exhibit any LCST between 20 to 70oC due to the imbalance in the hydrophilic-hydrophobic interaction in this polymer.
Seed contents of sika deer (Cervus nippon) dung and the fate of seeds in a temperate short grassland in an urban park in Japan
Haruna Ishikawa
Journal of Ecology and Field Biology , 2011,
Abstract: Many studies have suggested the positive effects of grazing by large herbivorous mammals on seed dispersal, but little isknown about how herbivores could affect the fate of ingested seeds. This study examined the effects of seed ingestion bysika deer (Cervus nippon) on seed fate in a temperate grassland established in an urban park long resided by high densitiesof sika deer. I compared species composition and seasonal traits of seed abundance and maturity in the grasslandcommunity with those in deer fecal pellets. In total, 27 herbaceous species were observed, including the predominantZoysia japonica. Seed phenology and production differed among the three dominant species (Z. japonica, Digitariaviolascens, and Hydrocotyle maritima). Pellets contained at least 26 species of herbaceous seeds, and their abundancediffered among species. Of the 26 species, 15 were observed in the vegetation at the study site. The peak of seed abundancein pellets for the dominant species appeared 1 month after the peak of inflorescence production (but most ofthe inflorescences were immature and susceptible to digestion) and consequently corresponded to the peak of matureinflorescence. Because sika deer are likely to ingest seeds at any maturity stage in the grassland and immature seeds areless hardened, ingested immature seeds can suffer great losses. The results suggested that the survival of germable seedswith great losses of immature seeds may be a factor determining which plant species can be successfully dispersed byherbivores.
Information and Communication Technology in Combating Counterfeit Drugs
Haruna Isah
International Journal of Engineering and Technology , 2012,
Abstract: Pharma frauds are on the rise, counterfeit drugs are giving sleepless nights to patients, pharmaceutical companies and governments. The laws prohibiting the sales of counterfeit drugs cannot succeed without technological interventions. Several analytical techniques and tools including spectroscopy, holograms, barcoding, differentiated packing, radio frequency identification, fingerprints, hyperspectral imaging etc. have been employed over the years in combating this menace; however this challenge is becoming more sophisticated with the evolution of the World Wide Web and online pharmacies. This paper presents a review on the contribution of Information and Communication Technology (ICT) as a drug counterfeit countermeasure.
Full Data Controlled Web-Based Feed Aggregator
Haruna Isah
International Journal of Computer Science & Information Technology , 2012,
Abstract: Feed syndication is analogous to electronic newsletters, both are aimed at delivering feeds to subscribers;the difference is that while newsletter subscription requires e-mail and exposed you to spam and securitychallenges, feed syndication ensures that you only get what you requested for. This paper reports a reviewon the state of the art of feed aggregation technology and the development of a locally hosted web basedfeed aggregator as a research tool using the core features of WordPress; the software was furtherenhanced with plugins and widgets for dynamic content publishing, database and object caching, socialweb syndication, back-up and maintenance, among others. The results highlight the current developmentsin software re-use and describes; how open source content management systems can be used for bothonline and offline publishing, a means whereby feed aggregator users can control and share feed data, aswell as how web developers can focus on extending the features of built-in software libraries inapplications rather than reinventing the wheel.
Robustness and Directed Structures in Ecological Flow Networks
Taichi Haruna
Physics , 2013,
Abstract: Robustness of ecological flow networks under random failure of arcs is considered with respect to two different functionalities: coherence and circulation. In our previous work, we showed that each functionality is associated with a natural path notion: lateral path for the former and directed path for the latter. Robustness of a network is measured in terms of the size of the giant laterally connected arc component and that of the giant strongly connected arc component, respectively. We study how realistic structures of ecological flow networks affect the robustness with respect to each functionality. To quantify the impact of realistic network structures, two null models are considered for a given real ecological flow network: one is random networks with the same degree distribution and the other is those with the same average degree. Robustness of the null models is calculated by theoretically solving the size of giant components for the configuration model. We show that realistic network structures have positive effect on robustness for coherence, whereas they have negative effect on robustness for circulation.
Theory of Interface: Category Theory, Directed Networks and Evolution of Biological Networks
Taichi Haruna
Mathematics , 2012,
Abstract: Biological networks have two modes. The first mode is static: a network is a passage on which something flows. The second mode is dynamic: a network is a pattern constructed by gluing functions of entities constituting the network. In this paper, first we discuss that these two modes can be associated with the category theoretic duality (adjunction) and derive a natural network structure (a path notion) for each mode by appealing to the category theoretic universality. The path notion corresponding to the static mode is just the usual directed path. The path notion for the dynamic mode is called lateral path which is the alternating path considered on the set of arcs. Their general functionalities in a network are transport and coherence, respectively. Second, we introduce a betweenness centrality of arcs for each mode and see how the two modes are embedded in various real biological network data. We find that there is a trade-off relationship between the two centralities: if the value of one is large then the value of the other is small. This can be seen as a kind of division of labor in a network into transport on the network and coherence of the network. Finally, we propose an optimization model of networks based on a quality function involving intensities of the two modes in order to see how networks with the above trade-off relationship can emerge through evolution. We show that the trade-off relationship can be observed in the evolved networks only when the dynamic mode is dominant in the quality function by numerical simulations. We also show that the evolved networks have features qualitatively similar to real biological networks by standard complex network analysis.
Information and Communication Technology in Combating Counterfeit Drugs
Haruna Isah
Computer Science , 2012,
Abstract: Pharma frauds are on the rise, counterfeit drugs are giving sleepless nights to patients, pharmaceutical companies and governments. The laws prohibiting the sales of counterfeit drugs cannot succeed without technological interventions. Several analytical techniques and tools including spectroscopy, holograms, barcoding, differentiated packing, radio frequency identification, fingerprints, hyperspectral imaging etc. have been employed over the years in combating this menace; however this challenge is becoming more sophisticated with the evolution of the World Wide Web and online pharmacies. This paper presents a review on the contribution of Information and Communication Technology (ICT) as a drug counterfeit countermeasure.
Full Data Controlled Web-Based Feed Aggregator
Haruna Isah
Computer Science , 2012, DOI: 10.5121/ijcsit.2012.4307
Abstract: Feed syndication is analogous to electronic newsletters, both are aimed at delivering feeds to subscribers; the difference is that while newsletter subscription requires e-mail and exposed you to spam and security challenges, feed syndication ensures that you only get what you requested for. This paper reports a review on the state of the art of feed aggregation technology and the development of a locally hosted web based feed aggregator as a research tool using the core features of WordPress; the software was further enhanced with plugins and widgets for dynamic content publishing, database and object caching, social web syndication, back-up and maintenance, among others. The results highlight the current developments in software re-use and describes; how open source content management systems can be used for both online and offline publishing, a means whereby feed aggregator users can control and share feed data, as well as how web developers can focus on extending the features of built-in software libraries in applications rather than reinventing the wheel.
Dynamic imaging of a small artery underneath skin surface of a human finger by optical coherence tomography  [PDF]
Masato Ohmi, Mitsuo Kuwabara, Masamitsu Haruna
Journal of Biomedical Science and Engineering (JBiSE) , 2013, DOI: 10.4236/jbise.2013.63030
Abstract:

OCT is a powerful tool for detection of physiological functions of micro organs underneath the human skin surface, besides the clinical application to ophthalmology, as recently demonstrated by the authors’ group. In particular, dynamics of peripheral vessels can be observed clearly in the time-sequential OCT images. Among the vascular system, only the small artery has two physiological functions both for the elastic artery and for muscle-controlled one. It, therefore, is important for dynamic analysis of blood flow and circulation. In the time-sequential OCT images obtained with 25 frames/sec, it is found that the small artery makes a sharp response to sound stress for contraction and expansion while it continues pulsation in synchronization with the heartbeats. This result indicates that the small artery exhibits clearly the two physiological functions for blood flow and circulation. In response to sound stress, blood flow is controlled effectively by thickness change of the tunica media which consists of five to six layers of smooth muscles. It is thus found that the thickness of the tunica media changes remarkably in response to external stress, which shows the activity of the sympathetic nerve. The dynamic analysis of the small artery presented here will allow us not only to understand the mechanism of blood flow control and also to detect abnormal physiological functions in the whole vascular system.

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