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Добірка наукової літератури з теми "DSIH"

Автор: Grafiati

Опубліковано: 11 вересня 2023

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Статті в журналах з теми "DSIH"

Katz, P. S., and W. N. Frost. "Intrinsic neuromodulation in the Tritonia swim CPG: serotonin mediates both neuromodulation and neurotransmission by the dorsal swim interneurons." Journal of Neurophysiology 74, no. 6 (December 1, 1995): 2281–94. http://dx.doi.org/10.1152/jn.1995.74.6.2281.

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1. Neuromodulation has previously been shown to be intrinsic to the central pattern generator (CPG) circuit that generates the escape swim of the nudibranch mollusk Tritonia diomedea; the dorsal swim interneurons (DSIs) make conventional monosynaptic connections and evoke neuromodulatory effects within the swim motor circuit. The conventional synaptic potentials evoked by a DSI onto cerebral neuron 2 (C2) and onto the dorsal flexion neurons (DFNs) consist of a fast excitatory postsynaptic potential (EPSP) followed by a prolonged slow EPSP. In their neuromodulatory role, the DSIs produce an enhancement of the monosynaptic connections made by C2 onto other CPG circuit interneurons and onto efferent flexion neurons. Previous work showed that the DSIs are immunoreactive for serotonin. Here we provide evidence that both the neurotransmission and the neuromodulation evoked by the DSIs are produced by serotonin, and that these effects may be pharmacologically separable. 2. Previously it was shown that bath-applied serotonin both mimics and occludes the modulation of the C2 synapses by the DSIs. Here we find that pressure-applied puffs of serotonin mimic both the fast and slow EPSPs evoked by a DSI onto a DFN, whereas high concentrations of bath-applied serotonin occlude both of these synaptic components. 3. Consistent with the hypothesis that serotonin mediates the actions of the DSIs, the serotonin reuptake inhibitor imipramine prolongs the duration of the fast DSI-DFN EPSP, increases the amplitude of the slow DSI-DFN EPSP, and increases both the amplitude and duration of the modulation of the C2-DFN synapse by the DSIs. 4.Two serotonergic antagonists were found that block the actions of the DSIs. Gramine blocks the fast DSI-DFN EPSP, and has far less of an effect on the slow EPSP and the modulation. Gramine also diminishes the depolarization evoked by pressure-applied serotonin, showing that it is a serotonin antagonist in this system. In contrast, methysergide greatly reduces both the slow EPSP and the modulation evoked by the DSIs, but has mixed effects on the fast EPSP. Methysergide also blocks the ability of exogenous serotonin to enhance the C2-DFN EPSP, demonstrating that it antagonizes the serotonin receptors responsible for this modulation. 5. Taken together with previous work, these results indicate that serotonin is likely to be responsible for all three actions of the DSIs that were examined: the fast and slow DSI-DFN EPSPs and the neuromodulation of the C2-DFN synapse. These results also indicate that the conventional and neuromodulatory effects of the DSIs may be pharmacologically separable. In future work it may be possible to determine the functional role of each in the swim circuit.

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Getting, P. A., and M. S. Dekin. "Mechanisms of pattern generation underlying swimming in Tritonia. IV. Gating of central pattern generator." Journal of Neurophysiology 53, no. 2 (February 1, 1985): 466–80. http://dx.doi.org/10.1152/jn.1985.53.2.466.

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Swimming behavior in the marine mollusc Tritonia diomedea is episodic, consisting of a series of alternating dorsal and ventral flexions initiated by a brief sensory stimulus. The swim motor pattern is generated by a network formed of four groups of premotor interneurons: cerebral cell 2 (C2), dorsal swim interneurons (DSIs), and two types of ventral swim interneurons (VSI-A and VSI-B). The initiation and maintenance of swimming depends on the establishment of a long-lasting ramp depolarization in both the premotor, pattern-generating interneurons, and the motor neurons (i.e., flexion neurons). Voltage clamp was used to measure the membrane current responsible for the ramp depolarization. In all cell classes the current had two components: a tonic inward current, which decayed as the swim progressed, and phasic inward current waves, which provided the synaptic drive during each swim burst. The ramp current in the flexion neurons and in C2 was generated largely by activity within the interneuronal pattern-generating network (PGN). The ramp current could be mimicked by driving activity in the pattern-generating interneurons. In VSI-B, the tonic component of the ramp current was independent of activity within the PGN and appeared to be derived from the long-lasting effect of an extrinsic input. The phasic components of the ramp, however, were dependent on PGN activity. The phasic inward current waves were blocked when pattern generation was prevented. In addition, phasic inward currents similar to those occurring during swimming could be produced by driving the C2. The tonic component of the ramp current in a DSI was dependent both on extrinsic inputs and PGN activity. Extrinsic inputs appeared to control the first 10-15 s of the tonic current. At longer times, activity within the DSI population itself maintained the ramp current. When one DSI was driven in a quiescent preparation, all other DSIs were inhibited, yet the DSIs are known to be coupled by monosynaptic, reciprocal excitatory synapses. This effect could be explained by the action of an unidentified inhibitory interneuron (I-neuron), which was excited by DSIs and in turn inhibited all other DSIs. The DSIs were therefore coupled reciprocally by both monosynaptic excitation and polysynaptic inhibition. Activity in C2 switched the DSI-DSI interaction from inhibition to excitation by inhibiting the I-neuron.(ABSTRACT TRUNCATED AT 400 WORDS)

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Wallenhammar, Ann-Charlotte, Zahra Saad Omer, Eva Edin, and Anders Jonsson. "Influence of Soil-Borne Inoculum of Plasmodiophora brassicae Measured by qPCR on Disease Severity of Clubroot-Resistant Cultivars of Winter Oilseed Rape (Brassica napus L.)." Pathogens 10, no. 4 (April 6, 2021): 433. http://dx.doi.org/10.3390/pathogens10040433.

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Use of resistant cultivars is considered the most effective tool in managing clubroot. Three clubroot-resistant commercial winter oilseed rape (OSR) cultivars and a susceptible ‘Cultivar mix’ were evaluated for disease severity index (DSI) and yield performance in field soils, selected for varying abundance of natural inoculum of Plasmodiophora brassicae. Seven field trials were carried out during 2017–2019 in winter OSR crops, and comparative bioassays were performed in a growth chamber. Substantial variation in clubroot infection between years was observed in the field trials. For Cultivar mix, a negative correlation (y = −252.3ln(x) + 58,897.6) was found between inoculum density and seed yield in five trials, whereas no correlation was found for the resistant cultivars. In bioassays, Cultivar mix exhibited a significantly high correlation between DSIb and number of gene copies g−1 soil (R2 = 0.72). For resistant cvs., Mentor and Alister, correlation was R2 = 0.45 and 0.58, respectively, indicating that resistance was under pressure. In field trials, DSIf of the resistant cultivars was lower (<27). The recommendation is thus to use clubroot-resistant cultivars of OSR as part of Integrated Pest Management in situations where abundance of P. brassicae DNA exceeds 1300 gene copies g−1 soil.

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Irving McGrath, Jennifer, Wengang Zhang, Regina Hollar, Alison Collings, Roger Powell, Rob D. Foale, Nicola Thurley, et al. "More Than a Moggy; A Population Genetics Analysis of the United Kingdom’s Non-Pedigree Cats." Genes 12, no. 10 (October 14, 2021): 1619. http://dx.doi.org/10.3390/genes12101619.

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The domestic cat is one of the most popular pets in the world. It is estimated that 89–92% of domestic cats in the UK are non-pedigree Domestic shorthair (DSH), Domestic longhair (DLH), or Domestic semi-longhair cats (DSLH). Despite their popularity, little is known of the UK non-pedigree cats’ population structure and breeding dynamics. Using a custom designed single nucleotide variant (SNV) array, this study investigated the population genetics of 1344 UK cats. Principal components analysis (PCA) and fastSTRUCTURE analysis verified that the UK’s DSH, DLH, and DSLH cats are random-bred, rather than admixed, mix breed, or crossbred. In contrast to pedigree cats, the linkage disequilibrium of these random-bred cats was least extensive and decayed rapidly. Homozygosity by descent (HBD) analysis showed the majority of non-pedigree cats had proportionally less of their genome in HBD segments compared to pedigree cats, and that these segments were older. Together, these findings suggest that the DSH, DLH, and DSLH cats should be considered as a population of random-bred cats rather than a crossbred or pedigree-admixed cat. Unexpectedly, 19% of random-bred cat genomes displayed a higher proportion of HBD segments associated with more recent inbreeding events. Therefore, while non-pedigree cats as a whole are genetically diverse, they are not impervious to inbreeding and its health risks.

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McConnell, M., A. S. Fokas, and B. Pelloni. "Localised coherent solutions of the DSI and DSII equations—a numerical study." Mathematics and Computers in Simulation 69, no. 5-6 (August 2005): 424–38. http://dx.doi.org/10.1016/j.matcom.2005.03.007.

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Boschetti, G., R. Rosa, and A. Trevisani. "Parallel Robot Translational Performance Evaluation through Direction-Selective Index (DSI)." Journal of Robotics 2011 (2011): 1–14. http://dx.doi.org/10.1155/2011/129506.

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Performance indexes usually provide global evaluations of robot performances mixing their translational and/or rotational capabilities. This paper proposes a definition of performance index, called direction-selective index (DSI), which has been specifically developed for parallel manipulators and can provide uncoupled evaluations of robot translational capabilities along relevant directions. The DSI formulation is first presented within a general framework, highlighting its relationship with traditional manipulability definitions, and then applied to a family of parallel manipulators (4-RUU) of industrial interest. The investigation is both numerical and experimental and allows highlighting the two chief advantages of the proposed DSIs over more conventional manipulability indexes: not only are DSIs more accurate in predicting the workspace regions where manipulators can best perform translational movements along specific directions, but also they allow foreseeing satisfactorily the dynamic performance variations within the workspace, though being purely kinematic indexes. The experiments have been carried out on an instrumented 4-RUU commercial robot.

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Mercado, Melissa C., Deborah M. Stone, Caroline W. Kokubun, Aimée-Rika T. Trudeau, Elizabeth Gaylor, Kristin M. Holland, and Brad N. Bartholow. "Inconsistencies in Overdose Suicide Death Investigation Practice and Potential Remedies Using Technology: A Centers for Disease Control and Prevention Consultation Meeting Summary." Academic Forensic Pathology 11, no. 2 (June 2021): 83–93. http://dx.doi.org/10.1177/19253621211022464.

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Introduction: It is widely accepted that suicides—which account for more than 47 500 deaths per year in the United States—are undercounted by 10% to 30%, partially due to incomplete death scene investigations (DSI) and varying burden-of-proof standards across jurisdictions. This may result in the misclassification of overdose-related suicides as accidents or undetermined intent. Methods: Virtual and in-person meetings were held with suicidologists and DSI experts from five states (Spring-Summer 2017) to explore how features of a hypothetical electronic DSI tool may help address these challenges. Results: Participants envisioned a mobile DSI application for cell phones, tablets, or laptop computers. Features for systematic information collection, scene description, and guiding key informant interviews were perceived as useful for less-experienced investigators. Discussion: Wide adoption may be challenging due to differences in DSI standards, practices, costs, data privacy and security, and system integration needs. However, technological tools that support consistent and complete DSIs could strengthen the information needed to accurately identify overdose suicides.

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van der Wegen-Franken, C. P. M., P. Mulder, B. Tank, and H. A. M. Neumann. "Variation in the dynamic stiffness index of different types of medical elastic compression stockings." Phlebology: The Journal of Venous Disease 23, no. 2 (April 2008): 77–84. http://dx.doi.org/10.1258/phleb.2007.006018.

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Objectives To calculate the dynamic stiffness index (DSI) of 18 different brands of medical elastic compression stockings (MECS). Methods In all, 18 different brands of MECS that were divided into five categories (class II round-knitted, class II flat-knitted, class III round-knitted, class III flat-knitted and class IV flat-knitted MECS) were tested. The static pressure and dynamic pressure pulsations at the B1 level were measured with a newly developed dynamic pressure-determining device. The DSI was calculated. Results The DSI of all 18 brands of MECS showed higher values compared with the static stiffness. A wide range of dynamic stiffness indices was observed not only between all brands of MECS, but also within the five categories. Conclusions The DSI of MECS is independent of the compression class and the type of knit. The variation in the DSIs between MECS is not because of any measurement error and would indicate that different therapeutic effectiveness may be expected within one compression class. Therefore, a refinement in the current classification system for MECS with other characteristics such as the DSI is warranted.

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Paramita, Anindya Dewi, Andi Tenri Faradiba, and Khintan Sucitasari Mustofa. "ADVERSE CHILDHOOD EXPERIENCE DAN DELIBERATE SELF HARM PADA REMAJA DI INDONESIA." Jurnal Psikologi Integratif 9, no. 1 (April 29, 2021): 16. http://dx.doi.org/10.14421/jpsi.v9i1.2137.

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Self-injurious behavior or acts of self-harm that are commonly found in adolescents are form of channeling negative emotions to deal with emotional pain. One reason for this pain was exposure to unpleasant experiences called adverse childhood experiences. This study aims to explore the detrimental effect of experience on self-harm in adolescents. This study used two measuring instruments, the Deliberate Self-Harm Inventory (DSHI) was used to measure DSH and Adverse Childhood Experience Quesionnaire (ACE.Q) was used to measure ACE. There were 168 respondents in the study who participated filling online questionnaire and they were gathered through non-probability sampling technique. The result showed that there was a positive correlation between adverse childhood experiences on self-harm with a sig value of 0.035 <0.05. This means that the higher the ACE, the higher the DSH. Perilaku melukai diri sendiri atau deliberate self-harm (DSH) banyak ditemukan pada remaja sebagai bentuk penyaluran emosi secara negatif untuk mengatasi rasa sakit secara emosional. Salah satu penyebab rasa sakit tersebut adalah adanya paparan pengalaman tidak menyenangkan yang disebut dengan adverse childhood experience (ACE). Penelitian ini bertujuan untuk mengetahui pengaruh adverse childhood experience terhadap deliberate self-harm pada remaja di Indonesia. Penelitian ini menggunakan dua alat ukur, yaitu Deliberate Self-Harm Inventory (DSHI) untuk mengukur DSH dan Adverse Childhood Experience Quesionnaire (ACE.Q) untuk mengukur ACE. Terdapat 168 responden dalam penelitian ini yang diperoleh secara online melalui teknik non-probability sampling. Hasil penelitian menunjukkan bahwa terdapat korelasi positif antara adverse childhood experience terhadap deliberate self-harm dengan nilai sig 0,035 < 0,05. Artinya, semakin tinggi adverse childhood experience maka semakin tinggi pula kecenderungan melakukan deliberate self-harm

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Myers, Ronald E., Shailesh M. Advani, Pamela Myers, Preethi Selvan, Gregory Garber, Brooke Worster, Neal Flomenberg, Andrew Chapman, and Ralph Zinner. "Engaging Patients with Late-Stage Non-Small Cell Lung Cancer in Shared Decision Making about Treatment." Journal of Personalized Medicine 11, no. 10 (October 1, 2021): 998. http://dx.doi.org/10.3390/jpm11100998.

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Few treatment decision support interventions (DSIs) are available to engage patients diagnosed with late-stage non-small cell lung cancer (NSCLC) in treatment shared decision making (SDM). We designed a novel DSI that includes care plan cards and a companion patient preference clarification tool to assist in shared decision making. The cards answer common patient questions about treatment options (chemotherapy, chemotherapy plus immunotherapy, targeted therapy, immunotherapy, clinical trial participation, and supportive care). The form elicits patient treatment preference. We then conducted interviews with clinicians and patients to obtain feedback on the DSI. We also trained oncology nurse educators to implement the prototype. Finally, we pilot tested the DSI among five patients with NSCLC at the beginning of an office visit scheduled to discuss treatment with an oncologist. Analyses of pilot study baseline and exit survey data showed that DSI use was associated with increased patient awareness of the alternatives’ treatment options and benefits/risks. In contrast, patient concern about treatment costs and uncertainty in treatment decision making decreased. All patients expressed a treatment preference. Future randomized controlled trials are needed to assess DSI implementation feasibility and efficacy in clinical care.

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Більше джерел

Дисертації з теми "DSIH"

Dudová, Zuzana. "Reštrukturalizácia logistického reťazca spoločností DSI Slovakia, s.r.o. a DSI Czech, s.r.o." Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-10844.

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The diploma thesis is focused on the logistic system of the particular companies. In the theory part you can find explanation for the following expressions: insourcing, backsourcing and outsourcing, focusing on the reasons that lead companies to outsource operations, advantages and disadvantages which outsourcing entail and the whole process description. Practical part focuses on a particular description of general logistical system of companies DSI Czech, s.r.o. and DSI Slovakia, s.r.o.; identifying a weak part of the system and the analysis of possible solutions with the attention to the high level of services provided with the optimal costs. The proposal considers the possibility of using outsourcing or continuing to use inhouse logistic management.

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Cardinal, Robert W., and George F. Tremain. "Space Shuttle Data Formatter DSI Model 7303 System." International Foundation for Telemetering, 1987. http://hdl.handle.net/10150/615288.

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International Telemetering Conference Proceedings / October 26-29, 1987 / Town and Country Hotel, San Diego, California
This abstract describes the hardware and software necessary for reserialization of asynchronous imbedded image data. The purpose of the DSI Model 7303 System is to reformat space shuttle imbedded (Payload Data Interleaver) PDI data. the system consists of two decoms, a DSI model 7303A and a DSI Model 7303B. The input to the 7303A box is 0I or NSP data (NRZ-L & CLOCK). The 7303A Frame syncs to the 0I or NSP data. The 7303A is front panel programmed to strip out only the imbedded PDI data and pass this data to the 7303B Decom. The 7303B Frame syncs to the PDI frame sync pattern. A second strip zone defines which words in the PDI frame get passed to the FIFO. A 24K byte ring FIFO Buffer is used to buffer data before reserialization for output. The serial output rate is a function of how many programmed PDI words per second are stripped out and the FIFO management status. The output bit rate is from a microprocessor controlled NCO. This system Makes possible real time video of Shuttle PDI data.

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OLIVEIRA, Thiago Borges de. "DSI-RTree - Um Índice R-Tree Distribuído Escalável." Universidade Federal de Goiás, 2010. http://repositorio.bc.ufg.br/tede/handle/tde/506.

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Made available in DSpace on 2014-07-29T14:57:47Z (GMT). No. of bitstreams: 1 dissertacao thiago b de oliveira 2010.pdf: 575961 bytes, checksum: 7a5a7e195780fa853d33c7629520df2a (MD5) Previous issue date: 2010-12-15
The demand for spatial data processing systems that support the creation of massive applications has steadily grown in the increasingly ubiquitous computing world. These demands aims to explore the large amount of existing data to assist people s daily lives and provide new tools for business and government. Most of the current solutions to process spatial data do not meet the scalability needed, and thus new solutions that efficiently use distributed computing resources are needed. This work presents a distributed and scalable system called DSI-RTree, which implements a distributed index to process spatial data in a cluster of computers. We also have done a review of details related to the construction of the distributed spatial index, by addressing issues such as the size of data partitions, how that partitions are distributed and the impact of these definitions in the message flow on the cluster. An equation to calculate the size of the partitions based on the size of data sets is proposed, to ensure efficiently query processing on the proposed architecture. We have done some experiments running window queries in spatial data sets of 33,000 and 158,000 polygons and the results showed a scalability greater than linear.
Em face de um mundo computacional ubíquo cada vez mais possível, tem crescido constantemente a necessidade de sistemas de processamento de dados espaciais que suportem a criação de aplicações massivas para explorar a grande quantidade de dados existente, a fim de auxiliar a vida cotidiana das pessoas e prover novas ferramentas para empresas e governo. Soluções atuais de processamento, em sua maioria, não possuem a escalabilidade necessária para atender esta demanda e novas soluções distribuídas que usam eficientemente os recursos computacionais são necessárias. Este trabalho apresenta o DSIRTree, um sistema distribuído e escalável, que implementa a indexação e processamento distribuído de dados espaciais em um cluster de computadores. Uma avaliação de parâmetros da construção do índice espacial distribuído é realizada, abordando aspectos como o tamanho das partições criadas, a forma de distribuição destas partições e o impacto destas definições na troca de mensagens entre as máquinas do cluster. Uma fórmula para cálculo do tamanho das partições conforme o tamanho dos datasets é proposta, a fim de garantir eficiência no processamento de consultas na arquitetura projetada. Testes práticos do sistema mostraram uma escalabilidade maior que linear no processamento de consultas de janela em datasets espaciais de 32 e 158 mil polígonos.

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Biswas, Subal C. "Efficiency and effectiveness of deep structure based subject indexing languages : PRECIS vs. DSIS." Thesis, Loughborough University, 1988. https://dspace.lboro.ac.uk/2134/7280.

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A 'Subject Indexing Language' (SIL) is an artificial language used for formulating names of subjects. Although classificationists have sought for universals in many fields of study such as, philosophy, biology, general systems theory, etc., the search for a deep structure of SILs formally began with Ranganathan's idea of 'absolute syntax' and was brought to the present by G. Bhattacharyya and D. Austin. Whereas Bhattacharyya's deep structure of SIL is primarily based on classificatory principles (parallel to 'absolute syntax'), the deep structure proposed by Austin has a linguistic connotation. The present study describes and compares two such deep structurebased SILs, viz., PRECIS (PREserved Context Index System) and DSIS (Deep Structure Indexing System), a recent computerized version of POPSI (POstulate-based Permuted Subject Indexing), developed by F. J. Devadason at Documentation Research and Training Centre, Bangalore, India. Both also belong to the category of SILs typified as 'string indexing' languages. The study involves: i) writing of a suitable DSIS index entry generation program, ii) using both PRECIS (in-house) and DSIS programs to index a collection of representative sample documents from the soft sciences, iii) analyzing and comparing their respective syntactic and semantic aspects in terms of both linguistic and classificatory principles, and iv) applying some measures of efficiency and effectiveness. It was realized that certain modifications in the existing DSIS string manipulation algorithms are necessary to make the program fully operational. Although, no attempts have been made to quantify the measures of effectiveness and efficiency as such, suggestions have been provided as to what these probably would be. Some indications of their searching difficulties for a prospective searcher have been put forward as well.

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Wang, Xiaoxin. "3G HSDPA Performance In Mobile Internet Connections." Thesis, KTH, Mikroelektronik och Informationsteknik, IMIT, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-93068.

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A key objective for 3G wireless networks, such as the Universal Mobile Telecommunication System (UMTS), is the explicit support for data communications for mobile users. Today, the dominant transport protocol in the Internet is the Transport Control Protocol (TCP). Since TCP was not tailored for wireless networks, there are some performance issues occurring when TCP traffic is transferred over a UMTS radio link. In this paper, the characteristics of TCP and UMTS are specified and the problems of TCP over UMTS dedicated channels (DCHs) are analyzed. The problem is high delays implying low utilization of allocated resources for small file transfers or due to packet losses. High Speed Downlink Packet Access (HSDPA)’s potential to solve the problem is studied. Since in HSDPA, High-Speed Downlink shared channel (HS-DSCH) is introduced as an alternative of DCH on downlink packet access, a model of HS-DSCH is built and simulations are performed in order to compare its TCP performance with DCH. The focus is on studying retransmission delay and Block Error Rate (BLER) targets. Some scheduling methods are also compared. The results indicate that HS-DSCH gives better TCP performance than a DCH, and that advanced scheduling methods gives similar result as round robin if there are packet losses. Moreover, a somewhat surprising result is found regarding fast retransmission and channel utilization for increasing BLER targets.
I denna rapport specificeras karaktäristiken för TCP and UMTS, och problemet med TCP över dedikerade UMTS kanaler analyseras. Problemet är höga fördröjningar som medför låg utnyttjande grad av allokerade resurser vid överföring av små filer eller vid paket förluster. High Speed Downlink Packet Access (HSDPA)’s potential att lösa problemet studeras. En modell av HS-DSCH konstrueras och simuleringar utförs för att jämföra dess TCP prestanda med DCH. Fokus är på att studera återsändningsfördröjning och BLER riktvärden. Några scheduleringsmetoder jämförs också. Resultatet indikerar att HS-DSCH ger bättre TCP prestanda än DCH, och att avancerad scheduleringsmetoder ger liknande resultat som round robin vid paket förluster. Dessutom har ett ganska överraskande resultat funnits kring snabb återsändning och kanal utnyttjande grad då BLER riktvärdet ökar.

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Le, Melinaire Pascal. "Modélisation de relations géométriques par la méthode DSI : application à la géologie." Vandoeuvre-les-Nancy, INPL, 1992. http://docnum.univ-lorraine.fr/public/INPL_T_1992_LE_MELINAIRE_P.pdf.

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L'ensemble des systèmes de CAO classiques supposent que les surfaces admettent une représentation paramétrique B(u,v) et sont interpolées par des fonctions du type Bezier, B-spline ou NURBS. Ces méthodes généralement appliquées dans l'industrie automobile et mécanique, ne permettent pas de traiter correctement des surfaces géologiques complexes ou de tenir compte interactivement de changements topologiques. Dans le cadre du projet GOCAD, J. L. Mallet propose une approche totalement différente, basée sur un nouveau principe d'interpolation en trois dimensions, appelé DSI (Discrete Smooth Interpolation). Les surfaces considérées sont constituées d'un maillage triangulaire et différents opérateurs linéaires, appelés contraintes, gouvernent l'allure de ces surfaces. Trois nouvelles contraintes vous sont proposées: les Fuzzy Control Point et Fuzzy Control Line ont respectivement pour but d'ajuster une surface à un ensemble de points distribués dans l'espace et à un ensemble de courbes, sans perturber la régularité et l'équilatérité des triangles du maillage. La contrainte On-Tsurf représente la notion géologique de contact entre deux surfaces ainsi que le glissement de l'une sur l'autre. Ces contraintes ont la particularité de mettre en jeu plusieurs objets, c'est pourquoi une importante partie de ce rapport est consacrée à un mécanisme de gestion de dépendances entre objets. Enfin, lorsque les objets sont appelés à partager un ensemble de points communs, un mécanisme d'échange, basé sur des importations et exportations, vous est présenté

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Andrade, Adriana Neves de [UNIFESP]. "Teste de identificação de sentenças dicóticas-DSI: desempenho em indivíduos audiologicamente normais." Universidade Federal de São Paulo (UNIFESP), 2009. http://repositorio.unifesp.br/handle/11600/10111.

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Made available in DSpace on 2015-07-22T20:50:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-01-28
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Objetivos: Padronizar a teste de identificação de sentenças dicóticas (DSI) em indivíduos normouvintes e comparar o desempenho entre: orelhas direita e esquerda, gênero, idade e escolaridade. Métodos: Participaram do estudo 200 indivíduos normouvintes com preferência manual direita, de ambos as gêneros, divididos em quatro grupos de acordo com a faixa etária: 13 a 19 anos, 20 a 29 anos, 30 a 39 anos e 40 a 49 anos. Todos as sujeitos foram submetidos a avalia<;ao audiol6gica básica e comportamental do processamento auditivo (teste de localização sonora, teste de memória para sons verbais e não verbais em seqüência, teste dicótico de dígitos) para excluir alterações auditivas periféricas e/ou distúrbio do processamento auditivo. A versão em português brasileiro do teste DSI foi elaborada e constou de seis faixas: calibrag8o, treino, integração binaural, escuta direcionada a direita, escuta direcionada a esquerda e treinamento auditivo. Para a analise dos resultados foram utilizadas medidas descritivas e analise inferencial (análise de covariância e variância com medidas repetidas, coeficiente de correlação de Spearman, teste de Kruskal-Wallis e método de Bonferroni). Resultados: Para o teste DSI, foi observado desempenho médio de 93,70% de acertos para a orelha direita e 88,60% de acertos à esquerda. Houve correlação negativa estatisticamente significante entre a porcentagem de acertos e a idade, em ambas as orelhas, para a treino (p=0,001 *) e para integraçao binaural (p=0,000*). Em relação ao grau de escolaridade, observou-se correlação positiva estatisticamente significante para todas as etapas do teste nas orelhas direita e esquerda. Não houve diferença estatisticamente significante entre os gêneros em nenhuma das etapas do teste OSI. Nas compara<;6es múltiplas, para as variáveis porcentagens medias de acertos e orelha, houve rela<;ao de dependência com a idade e escolaridade, mas não existiu dependência do gênero. Conclusoes: Os valores mínimos de referencia, considerando a etapa do teste e orelha são: 60% de acertos à direita e 40% de acertos à esquerda para a treino, 70% de acertos à direita e 60% de acertos à esquerda para a etapa de integração binaural e 72% de acertos bilateral mente na etapa de escuta direcionada. Na comparação do desempenho considerando as variáveis estudadas no teste DSI pode-se concluir que: há vantagem da orelha direita, não há diferenças entre os gêneros, com o aumento da idade há diminuição na porcentagem de acertos e quanto maior a nível educacional, melhor a desempenho dos indivíduos.
Purpose: To standardize the brazilian portuguese version of the dichotic sentence identification test (DSI) in normal listeners, comparing the performance of: right and left ears, gender, age and education. Methods: This study included 200 subjects normal listeners, right-handed, both genders, divided on four groups according to age: 13 to 19 years, 20 to 29 years, 30 to 39 years and 40 to 49 years. All subjects were submitted to basic audiological evaluation and behavioral auditory processing test (auditory localization test, verbal and non-verbal sounds in sequence, dichotic digits test) to exclude peripheral hearing impairment and/or auditory processind disorder. The DSI was prepared for the brazilian portuguese and applied in four stages: training, free report and directed report (right and left). For the analysis of the outcome measures were used descriptive and inferential analysis (analysis of variance and covariance with repeated measures, Spearman correlation coefficient, Kruskal-Wallis test and Bonferroni method). Results: For to DSI test, was observed average performance of 93,70% of hits for the right ear and 88,60% of hits left. There was a statistically significant negative correlation between the percentage of correct and age, in both ears, for training (p=0001*) and for free report (p=0000*). On the level of schooling, there was statistically significant positive correlation for all stages of the test in right and left ears. No statistically significant differences between genders in any of the stages of the DSI test. In multiple comparisons, for variables average percentages of correct and ear, there was a relationship of dependency with age and schooling, but there was no dependence on gender. Conclusions: The minimum values of reference, considering the stage of test and ear are: 60% of hits on the right and 40% of hits left for training, 70% of hits on the right and 60% of hits on the left to the stage of free report and 72% of hits in the stage of directed report bilaterally. In comparing the performance considering the variables in the DSI test could be held for all stages of the test, that there is advantage of the right ear, there are no differences between genders, with increasing age there is decrease in the percentage of correct and the higher the educational level, the better the performance of individuals.
FAPESP: 07/51231-1
TEDE
BV UNIFESP: Teses e dissertações

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McIntee, Gill Mary Sophie. "Dissociative symptoms in a deliberate self-harm and comparison female adolescent sample." Thesis, Bangor University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367311.

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Ahmed, Rafiq. "Seasonal Variation of Inorganic Nutrients (DSi, DIN and DIP) Concentration in Swedish River." Thesis, Linköping University, Department of Water and Environmental Studies, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-10387.

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Rivers have been playing most important role as fresh water source and medium of nutrient transportation from terrestrial to aquatic ecosystem. Inorganic form of nutrients (DSi, DIN and DIP) are plant available mostly control the productivity of aquatic ecosystem. Transfer of these nutrients in higher concentrations cause harmful eutrophication in receiving water body.

Study of dissolved inorganic nutrients concentrations in 12 Swedish rivers of different basin characteristics demonstrated both similar and varying behaviour from river to river and from season to season depending on catchment hydrology; land use and geology. Highest concentration did not coincide with the highest runoff. High DSi concentration observed in the unperturbed rivers however, high DIN and DIP concentration observed in agriculture dominated river followed by river basin dominated by industrial and urban activities. DSi and DIN concentration observed high in winter and decreased through spring to reach lowest in summer. DIP concentration although found low in summer but high concentration observed in early spring and early autumn. Rivers with low average runoff positively correlated with DSi and DIN concentration however, DIP demonstrated weak correlation.

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Thibault, Isabelle. "Exercice de l'influence : perception de trois directrices de soins infirmiers (DSI) au Québec." Mémoire, Université de Sherbrooke, 2012. http://hdl.handle.net/11143/6663.

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Les directrices de soins infirmiers (DSI) doivent être en mesure d'exercer de l'influence dans les établissements de santé afin d'accomplir efficacement leur mandat et atteindre leurs objectifs. En 2005, à la suite de la réorganisation du réseau de la santé, les DSI ont vu leur rôle évoluer et se profiler différemment en passant d'un rôle d'autorité hiérarchique à un rôle conseil dans la majorité des établissements de santé au Québec. La présente étude a pour but de décrire la perception de DSI concernant l'exercice de leur influence dans diverses structures de gouverne des soins infirmiers. De façon plus spécifique, l'étude vise à décrire leur contexte et leurs perceptions en regard des manifestations de l'influence, identifier certains facteurs et enfin, présenter le processus de l'exercice de l'influence tel que décrit par les participantes. Une étude de cas multiples a permis d'analyser les particularités et la complexité du phénomène de l'exercice de l'influence des DSI dans son contexte. L'échantillon intentionnel était formé de trois DSI, soit d'une DSI pour chacun des trois principaux modèles actuels de gouverne des soins infirmiers : hiérarchique, rôle conseil et hybride. Par conséquent, chacun des modèles de gouverne représentait un cas dont l'unité d'analyse était la DSI. Une recherche documentaire ainsi que deux entretiens semi-dirigés réalisés auprès de ces trois DSI ont constitué la stratégie de collecte des données. L'analyse qualitative inductive selon Miles et Huberman a été réalisée à l'aide d'une grille initiale d'analyse et les données ont été analysées au fur et à mesure par les membres de l'équipe. Bien que les DSI oeuvraient dans trois modèles de gouverne qui leur conféraient un statut et un rôle différent, les résultats révèlent que les stratégies déployées pour exercer de l'influence sont les mêmes à bien des égards. Plusieurs nuances ont tout de même été soulevées selon le modèle de gouverne en place. En effet, les DSI dans un modèle de gouverne hiérarchique et hybride utilisaient davantage des stratégies relevant du pouvoir fonctionnel, comme la prise de décision concernant la gestion des ressources et la circulation de l'information. Pour sa part, la DSI dans un modèle de rôle conseil employait surtout des stratégies qui relevaient du pouvoir personnel, telles la création de partenariat et l'utilisation de ses connaissances. Aussi, divers facteurs facilitaient l'exercice de l'influence d'une DSI, comme sa crédibilité dans l'organisation alors que d'autres, tels que la multiplicité des paliers organisationnels, étaient plus contraignants. Enfin, les DSI nous ont permis d'illustrer le processus de leur influence. Il est intéressant de constater que ce processus semble être similaire, peu importe le modèle de gouverne des soins infirmiers en place dans l'organisation. Les résultats de la présente étude renseignent donc les milieux cliniques sur diverses réalités associées à la gouverne des soins infirmiers et sur les conditions favorisant l'exercice de l'influence des DSI dans une organisation. L'ébauche du processus de l'influence, tel que perçu par ces DSI, tracera la voie pour des recherches ultérieures qui permettraient le développement d'un modèle illustrant l'exercice de l'influence des DSI au Québec.

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Centre, DSIR Library. DSIR UDC index. Lower Hutt [N.Z.]: DSIR Library Centre, 1985.

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Plant, Breeding Symposium DSIR (1986 Lincoln N. Z. ). Plant breeding symposium DSIR 1986. Lincoln, N.Z: Agronomy Society of New Zealand, 1986.

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L, Jordan T., and Langley Research Center, eds. Dynamic stability instrumentation system (DSIS). Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1994.

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L, Jordan T., and Langley Research Center, eds. Dynamic stability instrumentation system (DSIS). Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1994.

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Kerner, Ian. DSI--Date Scene Investigation. New York: HarperCollins, 2006.

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Hidro-Oseanografi, Indonesia Dinas. Daftar suar Indonesia (DSI) tahun 2002. Jakarta: Dinas Hidro-Oseoanografi, TNI AL, 2002.

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Hidro-Oseanografi, Indonesia Dinas, ed. Daftar suar Indonesia (DSI), tahun 2001. Jakarta: Dinas Hidro-Oseanografi, TNI AL, 2001.

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Great Britain. Medical Devices Directorate., ed. Philips Integris C 2000/DSI system. London: Department of Health, Medical Devices Directorate, 1992.

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Hidro-Oseanografi, Indonesia Jawatan, ed. Daftar Suar Indonesia (DSI) tahun 2006. Jakarta: Jawatan Hidro-Oseanografi TNI AL, 2006.

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(Germany), Bundesanstalt für Arbeitsschutz, ed. Sicherheit im Haushalt: Aktion das sichere Haus DSH. Dortmund: Die Bundesanstalt, 1993.

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Sedighi, Art, and Milton Smith. "DSIM." In Fair Scheduling in High Performance Computing Environments, 47–50. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-14568-2_7.

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Möller, Hans-Georg. "Zhuangzi (Dschuang Dsi)." In Kindlers Literatur Lexikon (KLL), 1–2. Stuttgart: J.B. Metzler, 2020. http://dx.doi.org/10.1007/978-3-476-05728-0_22057-1.

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Rungsawang, Arnon, Athichat Tangpong, and Pawat Laohawee. "Parallel DSIR Text Retrieval System." In Recent Advances in Parallel Virtual Machine and Message Passing Interface, 325–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-48158-3_40.

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Gramfort, Alexandre, Cyril Poupon, and Maxime Descoteaux. "Sparse DSI: Learning DSI Structure for Denoising and Fast Imaging." In Medical Image Computing and Computer-Assisted Intervention – MICCAI 2012, 288–96. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33418-4_36.

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Pumfrey, Peter D. "Dyslexia Screening Instrument (DSI)." In The Psychological Assessment of Reading, 305–7. London: Routledge, 2021. http://dx.doi.org/10.4324/9781003209225-22.

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Pelinovsky, Dmitry, and Catherine Sulem. "Embedded solitons of the DSII equation." In CRM Proceedings and Lecture Notes, 135–45. Providence, Rhode Island: American Mathematical Society, 2001. http://dx.doi.org/10.1090/crmp/027/13.

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Tian, Yangguang, Yingjiu Li, Yinghui Zhang, Nan Li, Guomin Yang, and Yong Yu. "DSH: Deniable Secret Handshake Framework." In Information Security Practice and Experience, 341–53. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99807-7_21.

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Majewski, Steven R., David R. Law, Sten Hasselquist, and Guillermo Damke. "Lessons from the Sagittarius dSph Tidal Stream." In Lessons from the Local Group, 231–41. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10614-4_19.

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Carigi, Leticia, Gerry Gilmore, and Xavier Hernández. "Chemical Evolution Models of Local dSph Galaxies." In The Evolution of Galaxies, 195. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-017-3313-7_42.

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Carigi, Leticia, Xavier Hernández, and Gerry Gilmore. "Dark Matter and Chemical Evolution of dSph Galaxies." In The Evolution of Galaxies, 533–34. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-3311-3_126.

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Тези доповідей конференцій з теми "DSIH"

Gao, Jinyang, Hosagrahar Visvesvaraya Jagadish, Wei Lu, and Beng Chin Ooi. "DSH." In SIGMOD/PODS'14: International Conference on Management of Data. New York, NY, USA: ACM, 2014. http://dx.doi.org/10.1145/2588555.2588565.

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Su, Yu, Yi Wang, Gagan Agrawal, and Rajkumar Kettimuthu. "SDQuery DSI." In SC13: International Conference for High Performance Computing, Networking, Storage and Analysis. New York, NY, USA: ACM, 2013. http://dx.doi.org/10.1145/2503210.2503270.

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Goh, S. H., J. Y. Cho, Jeffrey Lam, and J. C. H. Phang. "Mobile Diffractive Solid Immersion Lens Design for Backside Laser Based Fault Localization." In ISTFA 2010. ASM International, 2010. http://dx.doi.org/10.31399/asm.cp.istfa2010p0032.

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Abstract In this paper, a mobile Diffractive Solid Immersion Lens (mDSIL) design is proposed to enhance spatial resolution for backside laser fault isolation techniques. By allowing for multiple failure sites analysis using a single DSIL, this design improves conventional static DSIL directly fabricated on silicon substrate. The feasibility of mDSIL is demonstrated experimentally and the resolution performance is shown to be comparable to a static DSIL.

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Mathur, Sandeep, Shankar Sankaran, Samuel MacAulay, and Ivor Tsang. "MINIMUM VIABLE GOVERNANCE FOR DATA SCIENCE INITIATIVES A TRANSPORT FOR NSW CASE STUDY." In 10th IPMA Research conference: Value co-creation in the project society. International Project Management Association, Serbian Project Management Association, 2022. http://dx.doi.org/10.56889/vjtu9918.

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Too much governance can stifle innovation in organizations. Too little governance can waste precious organizational resources. Business agility demands empowerment of people to take decisions on initiatives designed to deliver innovative products and services. Traditional monthly and quarterly governance forums such as steering committees and program boards for decision-making potentially impede the flow of work when the delivery of a program or project is done using agile methods in two-weekly sprints and decisions are required at a different and more frequent cadence. Data Science Initiatives (DSIs) which are exploratory and innovative in nature follow agile delivery methods. This paper is an exploratory study of implementing governance for DSIs based on a single case study. It investigates agile governance at project, program, and portfolio level for DSIs and suggests eight guiding principles focusing on product and portfolio governance. It is targeted at practitioners to guide them in setting minimum viable governance to ensure value is realized from their DSIs and for academics to advance research in governance of DSIs.

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Liu, Jerry, Shenlong Wang, and Raquel Urtasun. "DSIC: Deep Stereo Image Compression." In 2019 IEEE/CVF International Conference on Computer Vision (ICCV). IEEE, 2019. http://dx.doi.org/10.1109/iccv.2019.00323.

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Bhanot, Karan, Dominic Schroeder, Isaac Llewellyn, Nicholas Luczak, and Thilanka Munasinghe. "Dengue Spread Information System (DSIS)." In ICMHI 2020: 2020 4th International Conference on Medical and Health Informatics. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3418094.3418133.

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Mohammady, Somayeh, Nasri Sulaiman, Pooria Varahram, Roslina Mohd Sidek, and Mohd Nizar Hamidon. "Performance investigation between DSI-SLM and DSI-PTS schemes in OFDM signals." In 2012 International Symposium on Telecommunication Technologies (ISTT). IEEE, 2012. http://dx.doi.org/10.1109/istt.2012.6481590.

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Łokas, E. L., S. Kazantzidis, J. Klimentowski, L. Mayer, Victor P. Debattista, and C. C. Popescu. "Biases in Mass Estimates of dSph Galaxies." In HUNTING FOR THE DARK: THE HIDDEN SIDE OF GALAXY FORMATION. AIP, 2010. http://dx.doi.org/10.1063/1.3458535.

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Zoveidavianpoor, Mansoor, Eadie Azahar Rosland, Pasi Laakkonen, Saman Aryana, Mohd Zaidi Jaafar, Jamal Mohamad Ibrahim, Hoshang Kolivand, et al. "The Concept of Need for a Downhole Scale Inspection Tool: An Appraisal for an Emerging Technology in Scale Management." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21265-ms.

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Abstract Monitoring techniques in oilfield scale management are expensive, susceptible to error, are not conducted in real-time, and they are non-in situ. Most scale prediction tools (i.e., water analysis and computer-based algorithms) have their deficiency and the need for accurately correlate calculated scaling tendencies with actual field data is evident. Lack of info about type, severity and location of scale deposits can lead to the failure of well intervention jobs. This work aims to serve as an opportunity to provide fertile ground and basis for utilizing new emerging technology for scale management in downhole application. Research into utilizing sensors along with an advanced computerized imaging procedure in the downhole application has not been explored to the same extent as other applications, such as scale monitoring in pipelines and surface facilities. Downhole Scale Inspection Tool (DSIT) is a new emerging technology which promises to enhance considerably our ability to detect deposits and scale with the aim of sensors and tomography technology. DSIT has enormous potential for application in downhole condition as it uses slickline unit alongside with routine well intervention jobs. The acquired data by DSIT such as temperature, pressure, depth, deposition thickness and permittivity are utilized for downhole scale analysis, monitoring and detection. When the type of scale is known, it is easier to take the correct steps in preventive maintenance or a cleaning process. Using DSIT, the trend of deposition thickness can be detected and immediately known if it is growing or shrinking. This will help to optimize any chemical feed and also generate substantial savings over time. This paper gives an overview of developing cutting-edge technology in downhole applications for scale management and possible barriers to new technology implementation. Using DSIT can lead to better data acquisition from downhole and contribute to a higher success rate of scale removal in downhole. This technique offers many benefits for scale treatment, monitoring and prediction when filed data is necessary for validation of scaling tendencies.

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Xiao, Cong, Shicheng Zhang, Xinfang Ma, and Tong Zhou. "Deep-Learning-Based Direct Forecast Approach for Fractured Shale Gas Reservoir Under Geological and Hydraulic Fracture Parameter Uncertainty." In SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210143-ms.

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Abstract Summary Accurate ultimate recovery prediction and uncertainty quantification are of significance during the process of unconventional shale resources development field development plan formulation. The uncertainties related to characterization of geological parameters and especially hydraulic/natural fracture system are not readily quantified through conventional model-based history matching procedure in practical applications. Data-space inversion (DSI) is a recently proposed data-space analysis and rapid forecast approach that easily samples the posterior predictions based on an ensemble of prior predictions and historical measurements. This paper presents a novel methodology based on a hybridization of DSI and a vector-to-vector residual neural network, referred to as DSI-DL, for well production forecast in unconventional shale reservoirs. A data-augmentation strategy that has been exploited in the literature is employed to generate a large number of training samples from a relatively small ensemble of shale reservoir model simulations. The DSI-DL method treats the shale gas production in our expected future time as target variables, which are directly predicted from pre-trained deep-learning model given historical data. This method enables us completely avoid the time-consuming history matching process where the characterization and inversion of hydraulic/natural fracture topology are highly complicated. We demonstrate the performances of this new approach on a synthetic vertically fractured well and a multi-well production scheme in naturally fractured shale formation. Some comparison with conventional DSI procedure and model-based history matching have shown that DSI-DL method achieves relatively robust results in estimating P10-P50-P90 values of shale gas time-series production against to data noise and prior ensemble size. DSI-DL algorithm will greatly contribute to the real-time prediction and optimization of shale gas well production rapidly given the streaming online observation data and have a wide range of practical application prospects, while a high computational efficiency remains. The proposed DSI-DL approach definitely will be useful for petroleum engineers to assess the value of information and manage the uncertainty of unconventional resources development.

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Rousculp, Christopher L., David Michael Oro, Christopher Morris, Alexander Saunders, William Reass, Jeffrey Randall Griego, Peter John Turchi, and Robert Emil Reinovsky. Damaged Surface Hydrodynamics (DSH) Flash Report. Office of Scientific and Technical Information (OSTI), April 2015. http://dx.doi.org/10.2172/1178310.

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Pulido, Jesus. DSI Python API Demo May 2023. Office of Scientific and Technical Information (OSTI), July 2023. http://dx.doi.org/10.2172/1992226.

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Hiemstra, Sipke Joost, Martin Brink, and Theo van Hintum. Digital Sequence Information (DSI) : Options and impact of regulating access and benefit sharing - stakeholder perspectives. Wageningen: Centre for Genetic Resources, the Netherlands (CGN), Wageningen University & Research, 2019. http://dx.doi.org/10.18174/470286.

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Weisser, Kristin L., Ryan T. Turgeon, Richard Kamin, and Douglas Mearns. 50/50 F-76/DSH-76 Specification and Fit-for-Purpose Level I Test Results. Fort Belvoir, VA: Defense Technical Information Center, September 2013. http://dx.doi.org/10.21236/ada618809.

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Sahu, Devaraj. A Study of the Defense Simulation Internet (DSI) for the Joint Advanced Distributed Simulation (JADS) Project. Fort Belvoir, VA: Defense Technical Information Center, April 1998. http://dx.doi.org/10.21236/ada381147.

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Crepeau, L. J. Re-Evaluating the DSI Contaminated Water Diving Kit's Ability to Prevent Water Aspiration into the MK 21 MOD 1 UBA. Fort Belvoir, VA: Defense Technical Information Center, April 1994. http://dx.doi.org/10.21236/ada279075.

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Tarmey, Christopher J. Evaluation of AGA Divator II Lightweight Umbilical Supplied Enclosed Space Diving System and Unmanned Testing of Widolf DF 400 and Prototype DSI (Diving Systems International) EX0-26 Full Face Masks. Fort Belvoir, VA: Defense Technical Information Center, June 1986. http://dx.doi.org/10.21236/ada171265.

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Amirav, Aviv, and Steven Lehotay. Fast Analysis of Pesticide Residues in Agricultural Products. United States Department of Agriculture, November 2002. http://dx.doi.org/10.32747/2002.7695851.bard.

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The overall theme of this project was to increase the speed of analysis for monitoring pesticide residues in food. Traditionally, analytical methods for multiple pesticides are time-consuming, expensive, laborious, wasteful, and ineffective to meet critical needs related to food safety. Faster and better methods were needed to provide more cost-effective detection of chemical contaminants, and thus provide a variety of benefits to agriculture. This overarching goal to speed and improve pesticide analysis was successfully accomplished even beyond what was originally proposed by the investigators in 1998. At that time, the main objectives of this project were: 1) to further develop a direct sample introduction (DSI) device that enables fast sampling and introduction of blended-only agricultural products for analysis by gas chromatography (GC); 2) to evaluate, establish, and further develop the method of simultaneous pulsed flame photometric detector (PFPD) and mass spectrometry (MS) detection for enhanced pesticide identification capabilities; and 3) to develop a new and novel MS pesticide analysis method, based on the use of supersonic molecular beams (SMB) for sampling and ionization. The first and third objectives were successfully accomplished as proposed, and the feasibility of the second objective was already demonstrated. The capabilities of the GC/SMB-MS approach alone were so useful for pesticide analysis that the simultaneous use of a PFPD was considered superfluous. Instead, the PFPD was investigated in combination with an electron-capture detector for low-cost, simultaneous analysis of organophosphorus and organochlorine pesticides in fatty foods. Three important, novel research projects not originally described in the proposal were also accomplished: 1) development of the quick, easy, cheap, effective, rugged, and safe (QuEChERS) method for pesticides in foods; 2) development and optimization of a method using low-pressure (LP) GC/MS to speed pesticide residue analysis; and 3) innovative application of analyte protectants to improve the GC analysis of important problematic pesticides. All of the accomplishments from this project are expected to have strong impact to the analytical community and implications to agriculture and food safety. For one, an automated DSI approach has become commercially available in combination with GC/MS for the analysis of pesticide residues. Meanwhile, the PFPD has become the selective detector of choice for the analysis of organophosphorus pesticides. Great strides were made in SMB-MS through the manufacture of a prototype "Supersonic GC/MS" instrument, which displayed many advantages over commercial GC/MS instruments. Most notably, the QuEChERS method is already being disseminated to routine monitoring labs and has shown great promise to improve pesticide analytical capabilities and increase lab productivity. The implications of these developments to agriculture will be to increase the percentage of food monitored and the scope of residues detected in the food, which will serve to improve food safety. Developed and developing countries alike will be able to use these methods to lower costs and improve results, thus imported/exported food products will have better quality without affecting price or availability. This will help increase trade between nations and mitigate certain disputes over residue levels in imported foods. The improved enforcement of permissible residue levels provided by these methods will have the effect to promote good agricultural practices among previously obstinate farmers who felt no repercussions from illegal or harmful practices. Furthermore, the methods developed can be used in the field to analyze samples quickly and effectively, or to screen for high levels of dangerous chemicals that may intentionally or accidentally appear in the food supply.

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Division of Science Integration (DSI). U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, May 2019. http://dx.doi.org/10.26616/nioshpub2019135.

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Science Action Plan for Shale Gas Exploration in the Karoo Basin. Academy of Science of South Africa (ASSAf), 2022. http://dx.doi.org/10.17159/assaf.2022/0080.

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This document presents the response of the Academy of Science of South Africa (ASSAf) and the South African Academy of Engineering (SAAE) to a request submitted by the Department of Science and Innovation (DSI) for a Science Action Plan (SAP) in support of an emerging shale gas industry in South Africa. As proposed in the DSI Concept Note, a researcher was engaged to develop the draft document, which was compiled jointly by ASSAf and SAAE. The report has clustered the SAP proposals into three groups: - Proposals that focus on fundamental research that will lead to knowledge generation - Proposals that focus on the application of current knowledge to new circumstances associated with a shale gas industry - Proposals that relate to enabling interventions to assist in the implementation of the SAP It is important that this document be read in the context of the ASSAf report “South Africa’s Technical Readiness to support the Shale Gas Industry”, submitted to DSI in June 2015 and published in October 2016, since the Science Action Plan is a direct outcome of that study.

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