The complication comes from the fact that the execution model does not have any means for the execution of "give up ownership of the lock" to have any influence over which execution of "gain ownership of the lock" in some other timeline (thread) follows. Very often, only certain handoffs give valid results. Thus, the programmer must think of all possible combinations of one thread giving up a lock and another thread getting it next, and make sure their code only allows valid combinations.

Freedom of Expression and Challenges Posed by Artificial Intelligence

he’s spent years grappling with barriers to retrofit existing cities.

that calls for a new form of altruism plus a new form of asceticism

Dillman and colleagues33Dillman KJ Czepkiewicz M Heinonen J DavíÐsdóttir B A safe and just space for urban mobility: a framework for sector-based sustainable consumption corridor development.Global Sustainability. 2021; 4: e28Crossref Scopus (16) Google Scholar noted that allocating the remaining planetary capacity to cope with the various barriers among countries and smaller units is morally and mathematically challenging.

Understanding the Complex Interplay of Governance, Systematic, and Structural Factors Affecting Service Delivery in South African Municipalities

Artificial Intelligence (AI) Literacy in Early Childhood Education: The Challenges and Opportunities

People have to verify their identities before companies can delete data, which poses an extra obstacle.

Challenges of an Citizen Launch

Challenges of a Governmental Launch

Thisradically inclusive approach is significantly more challenging than creating communitiesof like-minded people

If, in addition, the necessary financial resources are lacking, the citizens will not be able to adequatelymeet expectations either

For citizens,neighbourhoods are the place to live. This is the level at which they get to know each other, build re-lationships and take action to achieve political and socio-ecological change 23

right at the top of my list is our absolutely disastrous relationship with the natural systems around us

Working with a vast number of characters, all of whom defied expectations, demanded a different kind of film language. It became clear that an observational film wouldn’t work, and not only because of the number of subjects involved; it just wouldn’t do justice to the girls. “We didn’t want to just follow them,” Van Hemelryck says. “We felt there was much more that could be done with them.”

In what other fields can the concept of “grand challenges” be used?

“formulations of global problems that can be plausibly addressed through coordinated and collaborative effort”.

understand the nuances and obstacles that so frequently stymie the initiatives they undertake

Our species faces two great tasks in the next few centuries. Our first task is to make human brotherhood effective and permanent. Our second task is to preserve and enhance the rich diversity of Nature in the world around us. Our new understanding of biological and cultural evolution may help us to see more clearly what we have to do.

doughnut economics does questionthe dominant economic growth paradigm [1,14]. How-ever, Brand et al. [49] see the absence of upper limits onthe social foundation as a particular limitation of thedoughnut, proposing that ‘societal boundaries’ areneeded to address injustice and slow the metabolism ofsocieties that overshoot ecological boundaries. Indownscaling efforts, determining such societal bound-aries would require powerful local leadership and in-tensive public engagement to foster their legitimacywhile also helping to identify the social and culturalresources that can support collective self-restraint [49].Such engagement may also help to counter the interestsof powerful actors who oppose socioeconomic limits orbenefit from greater inequality [69].

Translating the ambition behind the doughnut to localaction is inherently political given the demand for socialand economic shifts that imply a significant redistribu-tion of power and resources [23,65]. Critical social sci-ence research highlights the need for principles tounderpin such decision-making processes, ensuring thatgovernance for sustainable development is transparent,accountable, and responsive, particularly to those whoare marginalised [49].

Thisraises questions about the mechanisms to coordinate andmonitor change across scales, as well as the challenge ofmaintaining coherence over time while wider prioritiesand goals may shift. Given this, and the plethora of localgovernance institutions and arrangements that exist,successfully deploying the doughnut will require re-newed attention to coordination across multilevel gov-ernance regimes [5,53].

he concept of planetary boundariesprioritising scientific expertise and discussed primarily inacademic debates [14], and the doughnut commonlyappealing to policy-makers and practitioners at nationalor subnational scales, neither has the traction acrossspatial scales that has been achieved through the steerby the UN in the case of SDGs.

If the doughnut is to bea practical tool for governance it will need to involve newconversations incorporating political institutions, civilsociety organisations, and the wider public

downscaling poses the additional complexity ofunderstanding place-based dynamic systems to identifypathways that are safe and just over time [26,37]. Incomparison to national processes, where issues are ad-dressed by separate government departments and siloedpolicy agendas [22], local institutions may be better ableto generate integrative place-based policy and action[43,44]. However, institutional capacity and integrationmechanisms may be needed to support these kinds ofpolicies [45]. Applications of the doughnut present fur-ther challenges in this regard because of a need to in-tegrate and respond to changing scientific knowledgeregarding non-linear change, tipping points, interactionsand feedbacks [35], for which it may be difficult toidentify the implications for local contexts.

Downscaling the doughnut may require more attentionto connectivity across scales than has been demanded bypast approaches to local governance for sustainable de-velopment. The task of downscaling global models in-tensifies established challenges around goal setting,indicator selection, data availability and ongoing mon-itoring [18,22,23,26,39] because it requires goal setting tobe informed by an understanding of context-specificsocial and ecological trends and how they interact toinfluence both local and planetary outcomes. There areparticular complications in incorporating a burden-sharing approach that explores the extent to which localactivity contributes to global trends and problems.

To put any of these ideas into practice requires the involvement of diverse actors across scales from the local to global (Ostrom et al., 1999). While cross-scale translation is necessary to inform decisions by such actors at sub-global scales, translation is complicated by the spatial heterogeneity of pressures and impacts (Biermann & Kim, 2020) and the value-laden (Biermann & Kalfagianni, 2020; Häyhä et al., 2016) and potentially iterative (Pickering & Persson, 2020) judgments involved in the allocation of these targets.

think I would add complexity and the fragility of six continent supply chain. The inability of global leaders to actually say some of the things that you're saying, 00:09:30 because that would cause a phase shift in how we approach the resource situation. I would add that everything is optimized for growth, and we will kick any possible can forward. So the default would be to grow a bigger global system using more fossil fuels and more renewables, 00:09:54 even with renewables growing at a faster rate. And in the process of decarbonizing our energy source, as you pointed out, we will re-materialize our mineral product source on the manufacturing side.

So now we are in a situation where we want to build a new system. And that system is going to be built with really, really fragile and expensive energy. No sorry, ineffective and expensive energy using a fragile finance system. It's probably a better way to say it. So our finance sector is not in a fit state to engage in industrial reform. And now we're also finding because energy's becoming a problem, and natural resources 00:06:52 are decreasing in grade, and getting harder to get hold of. So our ability to bring more resources online are getting harder and harder. At the same time, we have a massive pollution stream that is historically unprecedented and an environment that is deteriorating, that's the only way to describe it. Deteriorating at all levels. And we've got an unprecedented number of human population embedded in this system.

This is an effective, dynamic stand-in for a fixed secret.

Best Ways to Scale a Startup or Business Successfully

This demands that mobile technologies take into account differences in gender, education, and resource levels among farmers, and are responsive to changing circumstances. The impact and success of these tools and programs should be monitored and evaluated, with ineffective approaches being improved or replaced.

Lastly, the large number of con-nected sensors and devices can produce a huge amount of data whichcan easily overwhelm small scale server infrastructure

Power consumption canbe an issue since these IOT equipment requires power sources, whichcan increase the production cost of the vegetables

Another important facet of aquaponics is in pH stabilization. One ofthe most commonly reared fish species in aquaponics is nile tilapia(Oreochromis).

Pest and disease control is another challenging aspect of aquaponicsthat requires attention.

Firstly, for aquaponics to be a sustainable system for food produc-tion, nutrients input have to be used efficiently with minimal discard toachieve a zero discharge recirculating

aquaponics isdifficult to sustain due to several factors such as temperature control,lack of sunlight, excessive wind and moisture of air.

upcoming challenges

challenges

suggestions

Lean Canvas in JavaScript

the online classroom might be challenging for some to grapple with

network requests are a big deal, and having to deal with this kind of thing is one of the prices of switching away from server-side rendering to a distributed system

This poses a few problems for automation. In some environments, there may be no graphical display available, or it may be desirable to not have the browser appear at all when being controlled.

He was telling me it was 3,500, but the landlord was keeping 2,500 and giving him 1,000 of it. And I had found out, because the own landlord lady told me, and I had to move and I had to lose my job.

This is an important one, as it will enable us to use the aggregate functions that we are familiar when dealing with relational databases, but in the otherwise counter-intuitive environment of JSON data.

I like the idea in theory, however it doesn’t feel very robust – you are relying on the layout of the page in question. Many authors regularly revisit articles and add new sections and paragraphs. Now your #h2:3 link points to a previous section. (This is far less likely to happen with IDs.)

Teachers and administrators need to be aware of their community and who may or may not have access, not only in school but at home as well.

The underlying data might get changed by another process and then your process that uses the cache will be working with incorrect data

I had one issue with snap and that involved VLC but I can see how it would lead to issues with other packages. I hav the libdvdcss2 package installed to allow me to watch DVDs on my laptop. The snap version of VLC was not aware of that and wouldn’t play the DVD. I had to uninstall the snap and install the .deb package. Just one example, but I know there will be others. Due to the quasi-legal nature of libdvdcss2, I doubt it’ll ever be bundled in a VLC snap package.

480Gabriela Grosseck / Procedia Social and Behavioral Sciences 1 (2009) 478–482 2. Web 2.0 – Opportunities and Challenges for Higher

Moreover, common search practices miss information in the deep web—the parts of the web not indexed by standard commercial search engines

I originally did not use this approach because many pages that require translation are behind authentication that cannot/should not be run through these proxies.

One of the more clever aspects of the agent is how it can verify a user's identity (or more precisely, possession of a private key) without revealing that private key to anybody.

It makes sense that the incoherent render would not be committed to browser and that it would not have any consequences most of the time. But that means that you render logic must be ready to manage incoherency between props and states without crashing. E.g. a list of resource ids in props that doesn't match a list of http requests from a previous id list in the state could lead to weird situations. This is a worry that didn't exist in class components.

But that means that you render logic must be ready to manage incoherency between props and states without crashing

The thing is that each UI decision depends on countless other UI decisions. A simple example is keybindings. On UNIX/Linux, it’s nearly impossible to pick reasonable default bindings for global desktop navigation because they all conflict with bindings that some app is using. On Windows, the desktop navigation bindings are hardcoded, and no app uses them, because apps know for sure which bindings to avoid.

One dystopian potential outcome would be that, despite the best efforts of many institutions of all kinds, we could see a devolution back to a distinctly two-tiered system like what existed in 19th Century Britain. In this negative projection one can envision a very small number of well-endowed institutions that cater to the wealthy, well-prepared class as well as a small number of carefully picked representatives from various groups. These students would receive a world-class education, while most students would be at risk of receiving a much lower quality education that is overly-reliant on poorly built computerized teaching systems or online learning courseware that does not provide the kind of encouragement and motivation that is required to help students through the many challenges encountered when learning. Following this path could well lead to a self-perpetuating system across generations where a small elite group benefits from a compounding level of social capital, while most students are left out, leading to a widening of social, political, cultural, and financial gulfs.

A Pedagogical Framework for Technology Integration in ESL Classrooms 191is that in an online reading environment designed with embedded compre-hension strategy supports, ELLs’ comprehension gains were significantly associated with their frequency of using coaching avatars that provided sup-port for effective use of reading comprehension strategies (Proctor et al., 2007). Ubiquitous technology environments can arouse student interest in us-ing the technologies (Huang, Huang, Huang, & Lin, 2012; Sandberg, Maris, & de Geus, 2011) and promote better learning outcomes in listening, speak-ing and vocabulary acquisition (Gromik, 2012; Liu & Chu, 2010; Sandberg et al., 2011). Sandberg et al. (2011) observed that when students took home a smartphone to learn English about zoo animals, they were motivated to use it in their spare time, which enabled them to outperform those who did not take the mobile applications home. Technologies designed to adapt to individual learners’ needs have also demonstrated positive effects in promoting learning (Lo, Wang, & Yeh, 2004; Chen & Chung, 2008; Hsu, Hwang, & Chang, 2010; Jia, Chen, Ding, & Ruan, 2012; Wible, Kuo, Chien, Liu, & Tsao, 2001). Lo et al. (2004) used a hypermedia-based English prepositions learning system2 to diagnose students’ errors and provide adaptive remedial instructions, which signifi-cantly improved students’ confidence and learning outcomes. Challenges. The degree of freedom that teachers should give students when students use technology for language learning deserves exploration. Experiments have shown that, when students were free to choose how and when to use CALL, their choices could lead to poor learning and wasted time (Sciarone & Meijer, 1993). Another challenge is that, although learning tools provide easy access to resources, learners may feel overwhelmed by large amounts of information and become passive receivers of knowledge (Schmid, 2008). Easy access to resources can encourage laziness and pas-sivity of learners when it comes to checking materials and exploring knowl-edge themselves.

Adult learners face numerous challenges that include changing definitions, overcoming circumstances, relearning, and motivation. Addressing these challenges in a timely and personal way is especially important in distance learning environments. This roundtable will discuss how WGU addresses these challenges and prepares educators in a manner independent of place and time.

Malaysia’s smart cities are some way behind as they are still new. That is not a bad thing as Malaysia has avoided the pitfalls of being an early adopter. Authorities can apply advanced technology and systems that already work.

infrastructure (the Internet is slower in Egypt)

I’m sure lots of you out there may have challenges to the above ideas and even better ones.

new solutions for societal challenges

Describe how characters in a story respond to major events and challenge

So far this has been minimally to moderately successful.

Up for a Challenge?