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Author(s):  
Ronanld P. Gruber ◽  
Carlos Montemayor ◽  
Richard A. Block

There is a long standing ‘two times problem’ in that a satisfactory reconciliation between the time of physics and that of psychology has not been realized. A partial solution to the past/present/future phenomenon has been successfully given by the Hartle information gathering and processing system (IGUS) view. That model IGUS robot is enhanced here for the entire ‘two times problem’ to deal with not only the temporal experiences of the flow of time but also those of manifest time. A dualistic robot is proposed which has a veridical system of temporal experiences that are compatible with various spacetime cosmologies. It also has an illusory system of corresponding temporal experiences. This dualistic IGUS robot was made possible by discovering temporal experience within the brain that correspond to those of physics. The dualistic theory suggests that the veridical system, as a result of evolution, begets the illusory system to enhance behavioral adaptation. Thus, there is just one fundamental physical time which the brain does, indeed, possess and then enhances with illusory counterparts. Therefore, there should no longer be a need to reify illusory temporal experiences as modern spacetime cosmologies tend to do. Physical time already resides within human time.


HortScience ◽  
2022 ◽  
Vol 57 (1) ◽  
pp. 65-71
Author(s):  
Craig E. Kallsen ◽  
Dan E. Parfitt

Excessive boron (B) in soil and water is a problem for pistachio (Pistacia vera L.) production in the San Joaquin Valley (SJV) of California. Although amenable, leaching of B requires more water than chlorine (Cl) or sodium (Na) and is increasingly difficult as B in irrigation water increases. The lack of subsurface drainage to the ocean increases soil salinity in many growing areas, especially on the west side of the SJV where B is often excessive natively in the soil and water. Pistachio rootstocks that can tolerate or exclude B may be a partial solution. For the past decade in California, the dominant rootstock has been seedlings and clonal selections of University of California Berkeley 1 (UCB-1), which is a hybrid of P. atlantica × P. integerrima. This reliance on a genetically similar pool of rootstocks has constrained Pistacia’s genetic potential for adapting to high-salt environments. This study compared scion and rootstock leaflet B concentration of novel hybrid experimental rootstocks with variable percentages of P. vera and P. integerrima heritage with UCB-1. Rootstocks with P. vera heritage limited B in both rootstock and scion leaflets compared with UCB-1. In six trials conducted over several years, leaflet B in ungrafted hybrid rootstocks having 62.5% to 75% P. vera and 25% to 37.5% P. integerrima heritage had 27.6% to 43.1% lower B leaflet concentration than did UCB-1. Depending on the experiment and year, grafted rootstocks having 37.5% P. vera and 62.5% P. integerrima heritage had 46.8% to 70.8% lower B scion leaflet concentration than did UCB-1. Genetic variation in B uptake in Pistacia species and interspecific hybrids, and among individual seedlings within populations, allows the breeding of pistachio rootstocks more tolerant of excess B.


2022 ◽  
pp. 86-95

A system for ensuring the convertibility of a currency into specified commodities is also, ipso facto, a system for stabilizing the prices of those commodities in terms of the currency in question. This connection is widely ignored in discussions of these two subjects, but it links the two specialised fields of monetary economics and commodity price stabilization tightly together. Unfortunately, despite much work on the topic spanning many decades, almost all such work is made within a single paradigm – that of establishing an international institution to stabilize commodity prices. However, for a number of reasons, no international agreement can achieve more than a very partial solution to this problem: most importantly it cannot directly stabilize more than a single currency, thereby losing the most fundamental benefit of a true solution for all but one of the participating countries. A different approach is therefore needed.


2021 ◽  
Vol 3 (2) ◽  
pp. 75-87
Author(s):  
О. Lymar ◽  

The frequency spectrum of plane vibrations of an elastic plate separating a two-layer ideal fluid with a free surface in a rectangular channel is investigated analytically and numerically. For an arbitrary fixing of the contours of a rectangular plate, it is shown that the frequency spectrum of the problem under consideration consists of two sets of frequencies describing the vibrations of the free surface of the liquid and the elastic plate. The equations of coupled vibrations of the plate and the fluid are presented using a system of integro-differential equations with the boundary conditions for fixing the contours of the plate and the condition for the conservation of the volume of the fluid. When solving a boundary value problem for eigenvalues, the shape of the plate deflection is represented by the sum of the fundamental solutions of a homogeneous equation for a loose plate and a partial solution of an inhomogeneous equation by expanding in terms of eigenfunctions of oscillations of an ideal fluid in a rectangular channel. The frequency equation of free compatible vibrations of a plate and a liquid is obtained in the form of a fourth-order determinant. In the case of a clamped plate, its simplification is made and detailed numerical studies of the first and second sets of frequencies from the main mechanical parameters of the system are carried out. A weak interaction of plate vibrations on vibrations of the free surface and vice versa is noted. It is shown that with a decrease in the mass of the plate, the frequencies of the second set increase and take the greatest value for inertialess plates or membranes. A decrease in the frequencies of the second set occurs with an increase in the filling depth of the upper liquid or a decrease in the filling depth of the lower liquid. Taking into account two terms of the series in the frequency equation, approximate formulas for the second set of frequencies are obtained and their efficiency is shown. With an increase in the number of terms in the series of the frequency equation, the previous roots of the first and second sets are refined and new ones appear.


2021 ◽  
Vol 13 (12) ◽  
pp. 320
Author(s):  
Ahmed H. Ibrahim ◽  
Zaki T. Fayed ◽  
Hossam M. Faheem

Cloud computing has been a dominant computing paradigm for many years. It provides applications with computing, storage, and networking capabilities. Furthermore, it enhances the scalability and quality of service (QoS) of applications and offers the better utilization of resources. Recently, these advantages of cloud computing have deteriorated in quality. Cloud services have been affected in terms of latency and QoS due to the high streams of data produced by many Internet of Things (IoT) devices, smart machines, and other computing devices joining the network, which in turn affects network capabilities. Content delivery networks (CDNs) previously provided a partial solution for content retrieval, availability, and resource download time. CDNs rely on the geographic distribution of cloud servers to provide better content reachability. CDNs are perceived as a network layer near cloud data centers. Recently, CDNs began to perceive the same degradations of QoS due to the same factors. Fog computing fills the gap between cloud services and consumers by bringing cloud capabilities close to end devices. Fog computing is perceived as another network layer near end devices. The adoption of the CDN model in fog computing is a promising approach to providing better QoS and latency for cloud services. Therefore, a fog-based CDN framework capable of reducing the load time of web services was proposed in this paper. To evaluate our proposed framework and provide a complete set of tools for its use, a fog-based browser was developed. We showed that our proposed fog-based CDN framework improved the load time of web pages compared to the results attained through the use of the traditional CDN. Different experiments were conducted with a simple network topology against six websites with different content sizes along with a different number of fog nodes at different network distances. The results of these experiments show that with a fog-based CDN framework offloading autonomy, latency can be reduced by 85% and enhance the user experience of websites.


Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4419
Author(s):  
Ke Yan ◽  
Yao Le ◽  
Hu Mengen ◽  
Li Zhongbo ◽  
Huang Zhulin

Coaxial electrospinning (co-electrospinning) technique has greatly expanded the universality of fabricating core-shell polymer nanofibers. However, the effect of solution miscibility on the morphology of co-electrospun products remains unclear. Herein, different cellulose acetate (CA) solutions with high solution miscibility but distinctly different electrospinnability were used to survey the effect of solution miscibility on the co-electrospinning process. The structural characterizations show that co-electrospun products are composed of nanofibers with and without the core-shell structure. This indicates that partial solution mixing occurred during the co-electrospinning process instead of absolute no-mixing or complete mixing. Importantly, the solution miscibility also shows a significant influence on the product morphology. In particular, the transformation from nanofibers to microparticles was realized with the increase of core-to-shell flow ratio during the co-electrospinning of core electrosprayable CA/dimethylacetamide (DMAc) solution and shell electrospinnable CA/acetone-DMAc (2/1, v/v) solution. Results show that the solution miscibility exerts a significant effect on not only the formation of core-shell structure but also the product morphology. This work provides a new insight for the in-depth understanding of the co-electrospinning process.


2021 ◽  
Author(s):  
Dushyant D. Champaneri ◽  
Naren K. Patel

Photo selective shade net is a product made of plastic fibers connected together with each other, forming a regular porous structure and allowing gases, liquid and light to pass through. It has a capacity to selectively filter the intercepted solar radiation, in addition to their protective function. Vegetables are considered as protective food which are highly perishable in nature. High temperature due to global warming, climate change and excessive use of chemicals are some of the burning issues of vegetable production. Photo selective shade net can be a partial solution for these problems. Vegetable crops grown under different photo selective shade net shows productive responses thus by application of various Photo selective shade nets we can improve the quality as well as production of vegetable crops.


2021 ◽  
Author(s):  
◽  
Htu Tawng Lazum

<p>The issue of Internally Displaced Persons (IDPs) is a global crisis yet little research has been focused on the issue of the livelihoods of IDPs. Providing short-term emergency assistance is not enough when the period of displacement becomes permanent or longer than expected. IDPs need long-term solutions in order to resume a normal life. Pursuing appropriate livelihoods in urban areas is a big challenge yet constructing potential livelihoods is fundamental to achieving decent living not only for short-term situations but also for the long run. The lack of access to livelihoods is one of the most serious obstacles to durable solutions for IDPs, and long-term livelihood strategies are needed to lay the foundation for future development.  This study explores Kachin IDPs in Myanmar and their livelihood strategies and activities in urban camps by applying qualitative methods, the study focuses on how IDPs have been building their livelihoods during their displacement and who has been involved in supporting their livelihoods. This research also seeks insight into the effectiveness and sustainability of those livelihood activities and other potential strategies.   Results show that most livelihood activities are supported by both local and international humanitarian and development agencies and are mainly undertaken through local organisations. Agriculture and livestock rearing are preferred livelihoods of IDPs although getting appropriate land is challenging in urban areas. Income-generating programmes such as food processing, carpentry and bamboo handicrafts are also popular and successful activities. Moreover, tailoring, brick making, and pig rearing are also effective and helpful livelihoods for individuals. Those who are involved in livelihood support activities receive benefits and advantages for their family and daily needs while the majority of IDPs are working in day labouring. Respondents believe current livelihood activities can become sustainable as long as they maintain the quality of the products. Some IDPs have adapted to the city environment quite well by applying their capacity and the skills they learnt from humanitarian organisations. Supporting livelihood strategies may not resolve the problems of IDPs, however, it is an effective partial solution.</p>


2021 ◽  
Author(s):  
◽  
Htu Tawng Lazum

<p>The issue of Internally Displaced Persons (IDPs) is a global crisis yet little research has been focused on the issue of the livelihoods of IDPs. Providing short-term emergency assistance is not enough when the period of displacement becomes permanent or longer than expected. IDPs need long-term solutions in order to resume a normal life. Pursuing appropriate livelihoods in urban areas is a big challenge yet constructing potential livelihoods is fundamental to achieving decent living not only for short-term situations but also for the long run. The lack of access to livelihoods is one of the most serious obstacles to durable solutions for IDPs, and long-term livelihood strategies are needed to lay the foundation for future development.  This study explores Kachin IDPs in Myanmar and their livelihood strategies and activities in urban camps by applying qualitative methods, the study focuses on how IDPs have been building their livelihoods during their displacement and who has been involved in supporting their livelihoods. This research also seeks insight into the effectiveness and sustainability of those livelihood activities and other potential strategies.   Results show that most livelihood activities are supported by both local and international humanitarian and development agencies and are mainly undertaken through local organisations. Agriculture and livestock rearing are preferred livelihoods of IDPs although getting appropriate land is challenging in urban areas. Income-generating programmes such as food processing, carpentry and bamboo handicrafts are also popular and successful activities. Moreover, tailoring, brick making, and pig rearing are also effective and helpful livelihoods for individuals. Those who are involved in livelihood support activities receive benefits and advantages for their family and daily needs while the majority of IDPs are working in day labouring. Respondents believe current livelihood activities can become sustainable as long as they maintain the quality of the products. Some IDPs have adapted to the city environment quite well by applying their capacity and the skills they learnt from humanitarian organisations. Supporting livelihood strategies may not resolve the problems of IDPs, however, it is an effective partial solution.</p>


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